diff --git a/ChangeLog b/ChangeLog
index d2224d04b74bf4d03609082d1addb7f5f4c2f113..d56d74b20dbc497c48f6ff26870aa24717a18ebf 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2013-01-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Merge from gnulib, incorporating copyright-date changes and:
+	2012-12-31 dup2: work around cygwin bug
+
 2012-12-30  Jan Djärv  <jan.h.d@swipnet.se>
 
 	* configure.ac: Check for GtkHandlebox.
diff --git a/build-aux/snippet/warn-on-use.h b/build-aux/snippet/warn-on-use.h
index 51e69bbd9b6c5917dcb488805dafce2e82ba5753..1736a1bd7a44c94504a4956df483d3fdbbba34ab 100644
--- a/build-aux/snippet/warn-on-use.h
+++ b/build-aux/snippet/warn-on-use.h
@@ -1,5 +1,5 @@
 /* A C macro for emitting warnings if a function is used.
-   Copyright (C) 2010-2012 Free Software Foundation, Inc.
+   Copyright (C) 2010-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published
diff --git a/doc/misc/texinfo.tex b/doc/misc/texinfo.tex
index b5f31415771ddd10ffcb1b36ec4d6c2c4f7f68a7..d64f45bbee9a680089c17cc79d42b52a719098e3 100644
--- a/doc/misc/texinfo.tex
+++ b/doc/misc/texinfo.tex
@@ -3,11 +3,11 @@
 % Load plain if necessary, i.e., if running under initex.
 \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
 %
-\def\texinfoversion{2012-11-08.11}
+\def\texinfoversion{2013-01-01.15}
 %
 % Copyright 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
 % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-% 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
+% 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
 %
 % This texinfo.tex file is free software: you can redistribute it and/or
 % modify it under the terms of the GNU General Public License as
@@ -24,7 +24,8 @@
 %
 % As a special exception, when this file is read by TeX when processing
 % a Texinfo source document, you may use the result without
-% restriction.  (This has been our intent since Texinfo was invented.)
+% restriction. This Exception is an additional permission under section 7
+% of the GNU General Public License, version 3 ("GPLv3").
 %
 % Please try the latest version of texinfo.tex before submitting bug
 % reports; you can get the latest version from:
diff --git a/lib/at-func.c b/lib/at-func.c
index 481eea475a104c2b6e4217382b48e480b3ab4fac..03c56788b08677a023dba2780433f9acef682494 100644
--- a/lib/at-func.c
+++ b/lib/at-func.c
@@ -1,5 +1,5 @@
 /* Define at-style functions like fstatat, unlinkat, fchownat, etc.
-   Copyright (C) 2006, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/close-stream.c b/lib/close-stream.c
index 04fa5ece09d77267af8afb8bcc85c7a9edd246dd..d6a869287e360fa87ad70d440cc7f0946f896f78 100644
--- a/lib/close-stream.c
+++ b/lib/close-stream.c
@@ -1,6 +1,6 @@
 /* Close a stream, with nicer error checking than fclose's.
 
-   Copyright (C) 1998-2002, 2004, 2006-2012 Free Software Foundation, Inc.
+   Copyright (C) 1998-2002, 2004, 2006-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/dup2.c b/lib/dup2.c
index f6d0f1c73c5aa3c1fe4d7b66c933d553885df7f6..9219eb38238629e84649330b18079773ee39a058 100644
--- a/lib/dup2.c
+++ b/lib/dup2.c
@@ -1,6 +1,6 @@
 /* Duplicate an open file descriptor to a specified file descriptor.
 
-   Copyright (C) 1999, 2004-2007, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2004-2007, 2009-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -95,7 +95,10 @@ rpl_dup2 (int fd, int desired_fd)
 # ifdef F_GETFL
   /* On Linux kernels 2.6.26-2.6.29, dup2 (fd, fd) returns -EBADF.
      On Cygwin 1.5.x, dup2 (1, 1) returns 0.
+     On Cygwin 1.7.17, dup2 (1, -1) dumps core.
      On Haiku, dup2 (fd, fd) mistakenly clears FD_CLOEXEC.  */
+  if (desired_fd < 0)
+    fd = desired_fd;
   if (fd == desired_fd)
     return fcntl (fd, F_GETFL) == -1 ? -1 : fd;
 # endif
diff --git a/lib/euidaccess.c b/lib/euidaccess.c
index ca2ceca5d229aa831647e507139c3a1272e42e4e..f73438e6f4787124b532911128a3ce43114a2661 100644
--- a/lib/euidaccess.c
+++ b/lib/euidaccess.c
@@ -1,6 +1,6 @@
 /* euidaccess -- check if effective user id can access file
 
-   Copyright (C) 1990-1991, 1995, 1998, 2000, 2003-2006, 2008-2012 Free
+   Copyright (C) 1990-1991, 1995, 1998, 2000, 2003-2006, 2008-2013 Free
    Software Foundation, Inc.
 
    This file is part of the GNU C Library.
diff --git a/lib/faccessat.c b/lib/faccessat.c
index d11a3efaad6e3186956f07af0a1b27fcedd0eb77..f3c3f6736d252c10275b12f5b4eee2ea318e8f7d 100644
--- a/lib/faccessat.c
+++ b/lib/faccessat.c
@@ -1,5 +1,5 @@
 /* Check the access rights of a file relative to an open directory.
-   Copyright (C) 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2009-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fcntl.in.h b/lib/fcntl.in.h
index 604c31b7984a158853a48cfc6cd4b93bb4a9b77c..1e45a65a2130d3fa59da68c3216567d321221546 100644
--- a/lib/fcntl.in.h
+++ b/lib/fcntl.in.h
@@ -1,6 +1,6 @@
 /* Like <fcntl.h>, but with non-working flags defined to 0.
 
-   Copyright (C) 2006-2012 Free Software Foundation, Inc.
+   Copyright (C) 2006-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/filemode.c b/lib/filemode.c
index 24ffeae7c9955a08d1ca8780447aa69613ececf5..9e8735a5d7d08e99425f4a7d4b3c1dcbcd2ef0f3 100644
--- a/lib/filemode.c
+++ b/lib/filemode.c
@@ -1,6 +1,6 @@
 /* filemode.c -- make a string describing file modes
 
-   Copyright (C) 1985, 1990, 1993, 1998-2000, 2004, 2006, 2009-2012 Free
+   Copyright (C) 1985, 1990, 1993, 1998-2000, 2004, 2006, 2009-2013 Free
    Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/fpending.c b/lib/fpending.c
index 2591d53437748c4387ee45a391a8f271c2c3bc00..e917f4f15f6d987e8508000f09d2717fb827d909 100644
--- a/lib/fpending.c
+++ b/lib/fpending.c
@@ -1,5 +1,5 @@
 /* fpending.c -- return the number of pending output bytes on a stream
-   Copyright (C) 2000, 2004, 2006-2007, 2009-2012 Free Software Foundation,
+   Copyright (C) 2000, 2004, 2006-2007, 2009-2013 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/fpending.h b/lib/fpending.h
index 0365287ba76ce92573667ebf0e96d6b28ebe720d..bf40d3732e76ea8214ae433985ba725557e7021b 100644
--- a/lib/fpending.h
+++ b/lib/fpending.h
@@ -1,6 +1,6 @@
 /* Declare __fpending.
 
-   Copyright (C) 2000, 2003, 2005-2006, 2009-2012 Free Software Foundation,
+   Copyright (C) 2000, 2003, 2005-2006, 2009-2013 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/getgroups.c b/lib/getgroups.c
index f9d36236afeb39bb6d9bcc1049dcf0dde92f5c90..9856adc1a4d329b65de7c39909246806694d072d 100644
--- a/lib/getgroups.c
+++ b/lib/getgroups.c
@@ -1,6 +1,6 @@
 /* provide consistent interface to getgroups for systems that don't allow N==0
 
-   Copyright (C) 1996, 1999, 2003, 2006-2012 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1999, 2003, 2006-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/gnulib.mk b/lib/gnulib.mk
index 420520fbce79079c0db8961342080487d9a0db6f..ca628a28da43f7fb1d2697050f937b988642c142 100644
--- a/lib/gnulib.mk
+++ b/lib/gnulib.mk
@@ -1,6 +1,6 @@
 ## DO NOT EDIT! GENERATED AUTOMATICALLY!
 ## Process this file with automake to produce Makefile.in.
-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2013 Free Software Foundation, Inc.
 #
 # This file is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/lib/group-member.c b/lib/group-member.c
index 5fcc7e01d0c6f105e225590b1bbc9ba8407a1661..da015842c21e8f7a0705520abbb044b3c3080969 100644
--- a/lib/group-member.c
+++ b/lib/group-member.c
@@ -1,6 +1,6 @@
 /* group-member.c -- determine whether group id is in calling user's group list
 
-   Copyright (C) 1994, 1997-1998, 2003, 2005-2006, 2009-2012 Free Software
+   Copyright (C) 1994, 1997-1998, 2003, 2005-2006, 2009-2013 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/lstat.c b/lib/lstat.c
index 97fe6bb2d5320e8be3e3a37bac53ca0dfa10c729..1a613a89c8d86de75e1576b4edeeed274b687c7b 100644
--- a/lib/lstat.c
+++ b/lib/lstat.c
@@ -1,6 +1,6 @@
 /* Work around a bug of lstat on some systems
 
-   Copyright (C) 1997-2006, 2008-2012 Free Software Foundation, Inc.
+   Copyright (C) 1997-2006, 2008-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/md5.c b/lib/md5.c
index 6e6d61270dd4db5588c81561aa09a212568985c3..f41b5beb7ce54689e55280927afe0f172d41186a 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -1,6 +1,6 @@
 /* Functions to compute MD5 message digest of files or memory blocks.
    according to the definition of MD5 in RFC 1321 from April 1992.
-   Copyright (C) 1995-1997, 1999-2001, 2005-2006, 2008-2012 Free Software
+   Copyright (C) 1995-1997, 1999-2001, 2005-2006, 2008-2013 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/putenv.c b/lib/putenv.c
index 3c0f7ead3303bf0bd14ef334bcdd039f0647dc5c..5f0fedaf9cc8f009ddbabb558ae19a3d983e5b4e 100644
--- a/lib/putenv.c
+++ b/lib/putenv.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1994, 1997-1998, 2000, 2003-2012 Free Software
+/* Copyright (C) 1991, 1994, 1997-1998, 2000, 2003-2013 Free Software
    Foundation, Inc.
 
    NOTE: The canonical source of this file is maintained with the GNU C
diff --git a/lib/root-uid.h b/lib/root-uid.h
index 2379773c291c82e8a4d2de24ac1c47a7690cbb23..c75d88891edcc287ac5a55d6cb778d8fc112c3c6 100644
--- a/lib/root-uid.h
+++ b/lib/root-uid.h
@@ -1,6 +1,6 @@
 /* The user ID that always has appropriate privileges in the POSIX sense.
 
-   Copyright 2012 Free Software Foundation, Inc.
+   Copyright 2012-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sha1.c b/lib/sha1.c
index b9505dd94678bc7aa5e8f18c1a61331baeeaf32b..778389affc5992de971e75f0c62ee11d07937ff9 100644
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -1,7 +1,7 @@
 /* sha1.c - Functions to compute SHA1 message digest of files or
    memory blocks according to the NIST specification FIPS-180-1.
 
-   Copyright (C) 2000-2001, 2003-2006, 2008-2012 Free Software Foundation, Inc.
+   Copyright (C) 2000-2001, 2003-2006, 2008-2013 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
diff --git a/lib/sha256.c b/lib/sha256.c
index 55273c6a3bc3de4152e5339a224597fe5f152e84..4b2cee37fb59fab37764c0b33286335a73d9387b 100644
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -1,7 +1,7 @@
 /* sha256.c - Functions to compute SHA256 and SHA224 message digest of files or
    memory blocks according to the NIST specification FIPS-180-2.
 
-   Copyright (C) 2005-2006, 2008-2012 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sha512.c b/lib/sha512.c
index dfb67a305d8551472d9cf7a09a83171e751b616d..79f11257474ad8bfd0becbe3fa8d3df0a8de1aa0 100644
--- a/lib/sha512.c
+++ b/lib/sha512.c
@@ -1,7 +1,7 @@
 /* sha512.c - Functions to compute SHA512 and SHA384 message digest of files or
    memory blocks according to the NIST specification FIPS-180-2.
 
-   Copyright (C) 2005-2006, 2008-2012 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sig2str.c b/lib/sig2str.c
index 2f5b21cc36f29c8636836b8b4d00ad46a8d338a8..8b36e2facf0163946e2eec212d58308b5fcad1ab 100644
--- a/lib/sig2str.c
+++ b/lib/sig2str.c
@@ -1,6 +1,6 @@
 /* sig2str.c -- convert between signal names and numbers
 
-   Copyright (C) 2002, 2004, 2006, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2006, 2009-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sig2str.h b/lib/sig2str.h
index 75eff7d7c1a42e7209fdd65919550b80b8b60776..d16be98c07602621342fa8d28a5b24219b5f0fa3 100644
--- a/lib/sig2str.h
+++ b/lib/sig2str.h
@@ -1,6 +1,6 @@
 /* sig2str.h -- convert between signal names and numbers
 
-   Copyright (C) 2002, 2005, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005, 2009-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/stat.c b/lib/stat.c
index c0bcb88320fd39afae2d512580c90e5913e75734..f888130d26339d141f3bc1372658bfc336c70e83 100644
--- a/lib/stat.c
+++ b/lib/stat.c
@@ -1,5 +1,5 @@
 /* Work around platform bugs in stat.
-   Copyright (C) 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2009-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/stdio.in.h b/lib/stdio.in.h
index f3b52d28f6b8d8b12d2475daf53a4c1e6cae2be2..d9a67dc4d414cf32b438a1820ee0d860988e4f12 100644
--- a/lib/stdio.in.h
+++ b/lib/stdio.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <stdio.h>.
 
-   Copyright (C) 2004, 2007-2012 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2007-2013 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sys_stat.in.h b/lib/sys_stat.in.h
index 936c0fb8c4855c191204e10c14c280933d679a67..acc36947e38404ec9d3e76a37285242951a0186d 100644
--- a/lib/sys_stat.in.h
+++ b/lib/sys_stat.in.h
@@ -1,5 +1,5 @@
 /* Provide a more complete sys/stat header file.
-   Copyright (C) 2005-2012 Free Software Foundation, Inc.
+   Copyright (C) 2005-2013 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index 6171f77ac718f3b4f04a998454aecf11043c71cb..5127eecd603c57ccca8fae75fdfad17ab1ea84a8 100644
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <unistd.h>.
-   Copyright (C) 2003-2012 Free Software Foundation, Inc.
+   Copyright (C) 2003-2013 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/unsetenv.c b/lib/unsetenv.c
index ddbe9a4d2938a08f2488eb214cf80554637ebd8b..eea21129031bf1befdd563317e3f16e75556a0c4 100644
--- a/lib/unsetenv.c
+++ b/lib/unsetenv.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992, 1995-2002, 2005-2012 Free Software Foundation, Inc.
+/* Copyright (C) 1992, 1995-2002, 2005-2013 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xalloc-oversized.h b/lib/xalloc-oversized.h
index ad777d8dd79c84f07dc78b8d81b899765ba5600b..a971c78ad359ebf7270bae529f48048b09b8d491 100644
--- a/lib/xalloc-oversized.h
+++ b/lib/xalloc-oversized.h
@@ -1,6 +1,6 @@
 /* xalloc-oversized.h -- memory allocation size checking
 
-   Copyright (C) 1990-2000, 2003-2004, 2006-2012 Free Software Foundation, Inc.
+   Copyright (C) 1990-2000, 2003-2004, 2006-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/m4/c-strtod.m4 b/m4/c-strtod.m4
index 535721c8dbc6cf5fa1698ab51026a07518794a8f..318487f3b24587332095c9bd139a70c3fe3d8db6 100644
--- a/m4/c-strtod.m4
+++ b/m4/c-strtod.m4
@@ -1,6 +1,6 @@
 # c-strtod.m4 serial 15
 
-# Copyright (C) 2004-2006, 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2004-2006, 2009-2013 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/close-stream.m4 b/m4/close-stream.m4
index be0c8a22979d631f26eecf514017b2e5138ccac3..0a80c37a6c61f2a6891cabcff516845d71b645e8 100644
--- a/m4/close-stream.m4
+++ b/m4/close-stream.m4
@@ -1,5 +1,5 @@
 #serial 4
-dnl Copyright (C) 2006-2007, 2009-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2007, 2009-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/dup2.m4 b/m4/dup2.m4
index fc86e8085babcbd500bafb28599d77b80952a68e..269cfdc112380f35982e67535be4b179a1d55e1f 100644
--- a/m4/dup2.m4
+++ b/m4/dup2.m4
@@ -1,5 +1,5 @@
-#serial 18
-dnl Copyright (C) 2002, 2005, 2007, 2009-2012 Free Software Foundation, Inc.
+#serial 19
+dnl Copyright (C) 2002, 2005, 2007, 2009-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -39,6 +39,9 @@ AC_DEFUN([gl_FUNC_DUP2],
             /* Many gnulib modules require POSIX conformance of EBADF.  */
             if (dup2 (2, 1000000) == -1 && errno != EBADF)
               result |= 16;
+            /* Flush out a cygwin core dump.  */
+            if (dup2 (2, -1) != -1 || errno != EBADF)
+              result |= 32;
             return result;
            ])
         ],
diff --git a/m4/euidaccess.m4 b/m4/euidaccess.m4
index 2de95b88ba80d355f4e116ba1127ddd9b37bd865..12e5efcbe50ac7bbf1166e442d4f3cd97f5e1ff4 100644
--- a/m4/euidaccess.m4
+++ b/m4/euidaccess.m4
@@ -1,5 +1,5 @@
 # euidaccess.m4 serial 15
-dnl Copyright (C) 2002-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/extern-inline.m4 b/m4/extern-inline.m4
index 0a9fc9a75b64d4ca06522cc7e42ebef5c0436275..5880d4f4545960413324773ef90915196e32a8e0 100644
--- a/m4/extern-inline.m4
+++ b/m4/extern-inline.m4
@@ -1,6 +1,6 @@
 dnl 'extern inline' a la ISO C99.
 
-dnl Copyright 2012 Free Software Foundation, Inc.
+dnl Copyright 2012-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/faccessat.m4 b/m4/faccessat.m4
index 82f3b1f8dde32a9ff5438b51ac7a8fd180a1bba1..fb28bffa822b9c8705eea2eba6669e1869725e32 100644
--- a/m4/faccessat.m4
+++ b/m4/faccessat.m4
@@ -1,7 +1,7 @@
 # serial 6
 # See if we need to provide faccessat replacement.
 
-dnl Copyright (C) 2009-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fcntl_h.m4 b/m4/fcntl_h.m4
index cac28aeb28376da58286f5d17c5800220d5c0db2..3cff1fd64d25fb64cd68c0ae345ec806d5f8962c 100644
--- a/m4/fcntl_h.m4
+++ b/m4/fcntl_h.m4
@@ -1,6 +1,6 @@
 # serial 15
 # Configure fcntl.h.
-dnl Copyright (C) 2006-2007, 2009-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2007, 2009-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fpending.m4 b/m4/fpending.m4
index 33a5c94c3a3732abfda755f55670c19a889e6bab..8f5856243170c34ce2d6cfbba5144e7228414dd3 100644
--- a/m4/fpending.m4
+++ b/m4/fpending.m4
@@ -1,6 +1,6 @@
 # serial 19
 
-# Copyright (C) 2000-2001, 2004-2012 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2004-2013 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/getgroups.m4 b/m4/getgroups.m4
index 17473af486bf6424211d94d91b641581566f79e2..01b9b280b7b3b33b72e4d24f2baabfa770ba0c7c 100644
--- a/m4/getgroups.m4
+++ b/m4/getgroups.m4
@@ -3,7 +3,7 @@
 dnl From Jim Meyering.
 dnl A wrapper around AC_FUNC_GETGROUPS.
 
-# Copyright (C) 1996-1997, 1999-2004, 2008-2012 Free Software Foundation, Inc.
+# Copyright (C) 1996-1997, 1999-2004, 2008-2013 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
index f3ba8d56b1f6007ed1a246c4875abc733eba8009..0ae5a9ec6624a937b3c320d3b804c30d5d20dc1d 100644
--- a/m4/gnulib-common.m4
+++ b/m4/gnulib-common.m4
@@ -1,5 +1,5 @@
 # gnulib-common.m4 serial 33
-dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
index c836801649f3df9ec635ae9665ec7dbd30a7b800..06dd51a4d53fdb4ca163985bd747f75855b3062a 100644
--- a/m4/gnulib-comp.m4
+++ b/m4/gnulib-comp.m4
@@ -1,5 +1,5 @@
 # DO NOT EDIT! GENERATED AUTOMATICALLY!
-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2013 Free Software Foundation, Inc.
 #
 # This file is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/m4/group-member.m4 b/m4/group-member.m4
index c393b5b13032b8f081ce127998071ce11c9716b6..eb8dc62cd33746b77812d7b52361da28eb368ed2 100644
--- a/m4/group-member.m4
+++ b/m4/group-member.m4
@@ -1,6 +1,6 @@
 # serial 14
 
-# Copyright (C) 1999-2001, 2003-2007, 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 1999-2001, 2003-2007, 2009-2013 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/lstat.m4 b/m4/lstat.m4
index 01b4eb953d59b830d9228a067820bea02cde19bd..5f4db64a42b6d60ed1e3fbbeeb427c7a87ea705d 100644
--- a/m4/lstat.m4
+++ b/m4/lstat.m4
@@ -1,6 +1,6 @@
 # serial 26
 
-# Copyright (C) 1997-2001, 2003-2012 Free Software Foundation, Inc.
+# Copyright (C) 1997-2001, 2003-2013 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/md5.m4 b/m4/md5.m4
index 85ed8946068e7ce6fa45c99c727c8bad0de5818f..0ad6f504b53cd9f4ebc1ee972cdf7753dcd282ef 100644
--- a/m4/md5.m4
+++ b/m4/md5.m4
@@ -1,5 +1,5 @@
 # md5.m4 serial 13
-dnl Copyright (C) 2002-2006, 2008-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2008-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/putenv.m4 b/m4/putenv.m4
index b971b1204d67d4a0b6481effab00690a93209cad..9de53527a73e346ef2b5d65c9b8efcdc6af2d4ac 100644
--- a/m4/putenv.m4
+++ b/m4/putenv.m4
@@ -1,5 +1,5 @@
 # putenv.m4 serial 19
-dnl Copyright (C) 2002-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/setenv.m4 b/m4/setenv.m4
index e1931e7eb28155f19d87f82a15333944db3f135f..cb5351a07be03e2a7b74559a8e02666f33b479fb 100644
--- a/m4/setenv.m4
+++ b/m4/setenv.m4
@@ -1,5 +1,5 @@
 # setenv.m4 serial 26
-dnl Copyright (C) 2001-2004, 2006-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2004, 2006-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sha1.m4 b/m4/sha1.m4
index 29fa4850341bebe8dfe0160492ac03e0c9c34fa5..21c775e364ea6213fe006004b58573412282f9d4 100644
--- a/m4/sha1.m4
+++ b/m4/sha1.m4
@@ -1,5 +1,5 @@
 # sha1.m4 serial 11
-dnl Copyright (C) 2002-2006, 2008-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2008-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sha256.m4 b/m4/sha256.m4
index f75a7fb9e07917dd09005980755d9e17fa669015..7eede32fad63a17a0eaa6fbbed27b28717e03311 100644
--- a/m4/sha256.m4
+++ b/m4/sha256.m4
@@ -1,5 +1,5 @@
 # sha256.m4 serial 6
-dnl Copyright (C) 2005, 2008-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2008-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sha512.m4 b/m4/sha512.m4
index e6e27393d7d5445e3287d88e028d9e7a7f1d9c48..46c0895890cf3873b1804ab385e2a6276743a222 100644
--- a/m4/sha512.m4
+++ b/m4/sha512.m4
@@ -1,5 +1,5 @@
 # sha512.m4 serial 7
-dnl Copyright (C) 2005-2006, 2008-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2008-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sig2str.m4 b/m4/sig2str.m4
index 43650b045e7633b68408f513c472e13705397ec4..de738437243bed99122cb61c7a9673fbdb6fe598 100644
--- a/m4/sig2str.m4
+++ b/m4/sig2str.m4
@@ -1,5 +1,5 @@
 # serial 7
-dnl Copyright (C) 2002, 2005-2006, 2009-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2005-2006, 2009-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stat.m4 b/m4/stat.m4
index 0fd117e05eb71887730677b23c1cf9ca30e5d7ba..2456297acb7f0475c6b5f85174d6df332c077907 100644
--- a/m4/stat.m4
+++ b/m4/stat.m4
@@ -1,6 +1,6 @@
 # serial 11
 
-# Copyright (C) 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2009-2013 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/stdio_h.m4 b/m4/stdio_h.m4
index 3bd65803667bddac0bb424ce824de230e8eca04d..ebade067d992e55d11bb8e0eee4ffe81f582ab89 100644
--- a/m4/stdio_h.m4
+++ b/m4/stdio_h.m4
@@ -1,5 +1,5 @@
 # stdio_h.m4 serial 43
-dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_socket_h.m4 b/m4/sys_socket_h.m4
index acfae4132834e09c0a713a42b916715d5af35aae..94863776df50b12ed3b2592c8345c84838651928 100644
--- a/m4/sys_socket_h.m4
+++ b/m4/sys_socket_h.m4
@@ -1,5 +1,5 @@
 # sys_socket_h.m4 serial 23
-dnl Copyright (C) 2005-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_stat_h.m4 b/m4/sys_stat_h.m4
index 8af3353ea5108608e167f2b74e3feb362d15b8a5..6dd3d99b178efa9986912288754859eee59b8ca9 100644
--- a/m4/sys_stat_h.m4
+++ b/m4/sys_stat_h.m4
@@ -1,5 +1,5 @@
 # sys_stat_h.m4 serial 28   -*- Autoconf -*-
-dnl Copyright (C) 2006-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/unistd_h.m4 b/m4/unistd_h.m4
index f68fbff8cefdeac2aa19f5b8b6bbf0c386bd65e6..32dcfa5820420706f8c575aca51b4c9c7151f5c9 100644
--- a/m4/unistd_h.m4
+++ b/m4/unistd_h.m4
@@ -1,5 +1,5 @@
 # unistd_h.m4 serial 66
-dnl Copyright (C) 2006-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.