Merge from gnulib

This mostly just updates copyright dates of gnulib files.
It also updates to the latest version of texinfo.tex.

build-aux/gitlog-to-changelog

@@ -9,7 +9,7 @@ my $VERSION = '2015-06-11 01:03'; # UTC
 # If you change this file with Emacs, please let the write hook
 # do its job.  Otherwise, update this string manually.
 
-# Copyright (C) 2008-2015 Free Software Foundation, Inc.
+# Copyright (C) 2008-2016 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

build-aux/move-if-change

@@ -8,7 +8,7 @@ VERSION='2012-01-06 07:23'; # UTC
 # If you change this file with Emacs, please let the write hook
 # do its job.  Otherwise, update this string manually.
 
-# Copyright (C) 2002-2015 Free Software Foundation, Inc.
+# Copyright (C) 2002-2016 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

build-aux/snippet/arg-nonnull.h

 /* A C macro for declaring that specific arguments must not be NULL.
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 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

build-aux/snippet/c++defs.h

 /* C++ compatible function declaration macros.
-   Copyright (C) 2010-2015 Free Software Foundation, Inc.
+   Copyright (C) 2010-2016 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

build-aux/snippet/warn-on-use.h

 /* A C macro for emitting warnings if a function is used.
-   Copyright (C) 2010-2015 Free Software Foundation, Inc.
+   Copyright (C) 2010-2016 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

build-aux/update-copyright

@@ -5,7 +5,7 @@ eval '(exit $?0)' && eval 'exec perl -wS -0777 -pi "$0" ${1+"$@"}'
 
 my $VERSION = '2015-01-15.20:53'; # UTC
 
-# Copyright (C) 2009-2015 Free Software Foundation, Inc.
+# Copyright (C) 2009-2016 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

doc/misc/texinfo.tex

@@ -3,7 +3,7 @@
 % Load plain if necessary, i.e., if running under initex.
 \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
 %
-\def\texinfoversion{2015-12-17.20}
+\def\texinfoversion{2015-12-20.12}
 %
 % Copyright 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
 % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
@@ -5410,6 +5410,9 @@
 }
 
 \def\begindoublecolumns{\begingroup % ended by \enddoublecolumns
+  % If not much space left on page, start a new page.
+  \ifdim\pagetotal>0.8\vsize\vfill\eject\fi
+  %
   % Grab any single-column material above us.
   \output = {%
     %
@@ -5467,7 +5470,7 @@
   % since nobody clobbers \vsize.)
   \global\doublecolumntopgap = \topskip
   \global\advance\doublecolumntopgap by -1\baselineskip
-  \global\advance\vsize by -1\doublecolumntopgap
+  \advance\vsize by -1\doublecolumntopgap
   \vsize = 2\vsize
   \topskip=0pt
   \global\entrylinedepth=0pt\relax
@@ -5537,23 +5540,20 @@
   \penalty0
   %
   \output = {%
-    % Split the last of the double-column material.  Leave it on the
-    % current page, no automatic page break.
+    % Split the last of the double-column material.
     \savemarks
     \balancecolumns
     %
-    % If we end up splitting too much material for the current page,
-    % though, there will be another page break right after this \output
-    % invocation ends.  Having called \balancecolumns once, we do not
+    % Having called \balancecolumns once, we do not
     % want to call it again.  Therefore, reset \output to its normal
-    % definition right away.  (We hope \balancecolumns will never be
-    % called on to balance too much material, but if it is, this makes
-    % the output somewhat more palatable.)
+    % definition right away.
     \global\output = {\onepageout{\pagecontents\PAGE}}%
   }%
   \eject
   \endgroup % started in \begindoublecolumns
   \restoremarks
+  % Leave the double-column material on the current page, no automatic
+  % page break.
   \box\balancedcolumns
   %
   % \pagegoal was set to the doubled \vsize above, since we restarted

lib/acl-errno-valid.c

 /* Test whether ACLs are well supported on this system.
 
-   Copyright 2013-2015 Free Software Foundation, Inc.
+   Copyright 2013-2016 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

lib/acl-internal.c

 /* Test whether a file has a nontrivial ACL.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2016 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

lib/acl-internal.h

 /* Internal implementation of access control lists.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2016 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

lib/acl.h

 /* acl.c - access control lists
 
-   Copyright (C) 2002, 2008-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2008-2016 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

lib/acl_entries.c

 /* Return the number of entries in an ACL.
 
-   Copyright (C) 2002-2003, 2005-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2016 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

lib/alloca.in.h

 /* Memory allocation on the stack.
 
-   Copyright (C) 1995, 1999, 2001-2004, 2006-2015 Free Software Foundation,
+   Copyright (C) 1995, 1999, 2001-2004, 2006-2016 Free Software Foundation,
    Inc.
 
    This program is free software; you can redistribute it and/or modify it

lib/allocator.h

 /* Memory allocators such as malloc+free.
 
-   Copyright (C) 2011-2015 Free Software Foundation, Inc.
+   Copyright (C) 2011-2016 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

lib/at-func.c

 /* Define at-style functions like fstatat, unlinkat, fchownat, etc.
-   Copyright (C) 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2016 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

lib/binary-io.h

 /* Binary mode I/O.
-   Copyright (C) 2001, 2003, 2005, 2008-2015 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003, 2005, 2008-2016 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

lib/byteswap.in.h

 /* byteswap.h - Byte swapping
-   Copyright (C) 2005, 2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007, 2009-2016 Free Software Foundation, Inc.
    Written by Oskar Liljeblad <oskar@osk.mine.nu>, 2005.
 
    This program is free software: you can redistribute it and/or modify

lib/c-ctype.h

@@ -5,7 +5,7 @@
    <ctype.h> functions' behaviour depends on the current locale set via
    setlocale.
 
-   Copyright (C) 2000-2003, 2006, 2008-2015 Free Software Foundation, Inc.
+   Copyright (C) 2000-2003, 2006, 2008-2016 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

lib/c-strcase.h

 /* Case-insensitive string comparison functions in C locale.
-   Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2015 Free Software
+   Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2016 Free Software
    Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify

lib/c-strcasecmp.c

 /* c-strcasecmp.c -- case insensitive string comparator in C locale
-   Copyright (C) 1998-1999, 2005-2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2006, 2009-2016 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

lib/c-strncasecmp.c

 /* c-strncasecmp.c -- case insensitive string comparator in C locale
-   Copyright (C) 1998-1999, 2005-2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2006, 2009-2016 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

lib/careadlinkat.c

 /* Read symbolic links into a buffer without size limitation, relative to fd.
 
-   Copyright (C) 2001, 2003-2004, 2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 2001, 2003-2004, 2007, 2009-2016 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify

lib/careadlinkat.h

 /* Read symbolic links into a buffer without size limitation, relative to fd.
 
-   Copyright (C) 2011-2015 Free Software Foundation, Inc.
+   Copyright (C) 2011-2016 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

lib/close-stream.c

 /* Close a stream, with nicer error checking than fclose's.
 
-   Copyright (C) 1998-2002, 2004, 2006-2015 Free Software Foundation, Inc.
+   Copyright (C) 1998-2002, 2004, 2006-2016 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

lib/count-one-bits.h

 /* count-one-bits.h -- counts the number of 1-bits in a word.
-   Copyright (C) 2007-2015 Free Software Foundation, Inc.
+   Copyright (C) 2007-2016 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

lib/count-trailing-zeros.h

 /* count-trailing-zeros.h -- counts the number of trailing 0 bits in a word.
-   Copyright 2013-2015 Free Software Foundation, Inc.
+   Copyright 2013-2016 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

lib/dirent.in.h

 /* A GNU-like <dirent.h>.
-   Copyright (C) 2006-2015 Free Software Foundation, Inc.
+   Copyright (C) 2006-2016 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

lib/dirfd.c

 /* dirfd.c -- return the file descriptor associated with an open DIR*
 
-   Copyright (C) 2001, 2006, 2008-2015 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2006, 2008-2016 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

lib/dosname.h

 /* File names on MS-DOS/Windows systems.
 
-   Copyright (C) 2000-2001, 2004-2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2000-2001, 2004-2006, 2009-2016 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

lib/dtotimespec.c

 /* Convert double to timespec.
 
-   Copyright (C) 2011-2015 Free Software Foundation, Inc.
+   Copyright (C) 2011-2016 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

lib/dup2.c

 /* Duplicate an open file descriptor to a specified file descriptor.
 
-   Copyright (C) 1999, 2004-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2004-2007, 2009-2016 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

lib/errno.in.h

 /* A POSIX-like <errno.h>.
 
-   Copyright (C) 2008-2015 Free Software Foundation, Inc.
+   Copyright (C) 2008-2016 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

lib/euidaccess.c

 /* euidaccess -- check if effective user id can access file
 
-   Copyright (C) 1990-1991, 1995, 1998, 2000, 2003-2006, 2008-2015 Free
+   Copyright (C) 1990-1991, 1995, 1998, 2000, 2003-2006, 2008-2016 Free
    Software Foundation, Inc.
 
    This file is part of the GNU C Library.

lib/execinfo.in.h

 /* Information about executables.
 
-   Copyright (C) 2012-2015 Free Software Foundation, Inc.
+   Copyright (C) 2012-2016 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

lib/faccessat.c

 /* Check the access rights of a file relative to an open directory.
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 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

lib/fcntl.c

 /* Provide file descriptor control.
 
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 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

lib/fcntl.in.h

 /* Like <fcntl.h>, but with non-working flags defined to 0.
 
-   Copyright (C) 2006-2015 Free Software Foundation, Inc.
+   Copyright (C) 2006-2016 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

lib/fdatasync.c

 /* Emulate fdatasync on platforms that lack it.
 
-   Copyright (C) 2011-2015 Free Software Foundation, Inc.
+   Copyright (C) 2011-2016 Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public

lib/fdopendir.c

 /* provide a replacement fdopendir function
-   Copyright (C) 2004-2015 Free Software Foundation, Inc.
+   Copyright (C) 2004-2016 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

lib/filemode.c

 /* filemode.c -- make a string describing file modes
 
-   Copyright (C) 1985, 1990, 1993, 1998-2000, 2004, 2006, 2009-2015 Free
+   Copyright (C) 1985, 1990, 1993, 1998-2000, 2004, 2006, 2009-2016 Free
    Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify

lib/filemode.h

 /* Make a string describing file modes.
 
-   Copyright (C) 1998-1999, 2003, 2006, 2009-2015 Free Software Foundation,
+   Copyright (C) 1998-1999, 2003, 2006, 2009-2016 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify

lib/fpending.c

 /* fpending.c -- return the number of pending output bytes on a stream
-   Copyright (C) 2000, 2004, 2006-2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 2000, 2004, 2006-2007, 2009-2016 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify

lib/fpending.h

 /* Declare __fpending.
 
-   Copyright (C) 2000, 2003, 2005-2006, 2009-2015 Free Software Foundation,
+   Copyright (C) 2000, 2003, 2005-2006, 2009-2016 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify

lib/fstatat.c

 /* Work around an fstatat bug on Solaris 9.
 
-   Copyright (C) 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2016 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

lib/fsync.c

@@ -7,7 +7,7 @@
 
    Written by Richard W.M. Jones <rjones.at.redhat.com>
 
-   Copyright (C) 2008-2015 Free Software Foundation, Inc.
+   Copyright (C) 2008-2016 Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public

lib/ftoastr.c

 /* floating point to accurate string
 
-   Copyright (C) 2010-2015 Free Software Foundation, Inc.
+   Copyright (C) 2010-2016 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

lib/ftoastr.h

 /* floating point to accurate string
 
-   Copyright (C) 2010-2015 Free Software Foundation, Inc.
+   Copyright (C) 2010-2016 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

lib/get-permissions.c

 /* Get permissions of a file.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2016 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

lib/getdtablesize.c

 /* getdtablesize() function for platforms that don't have it.
-   Copyright (C) 2008-2015 Free Software Foundation, Inc.
+   Copyright (C) 2008-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This program is free software: you can redistribute it and/or modify

lib/getgroups.c

 /* provide consistent interface to getgroups for systems that don't allow N==0
 
-   Copyright (C) 1996, 1999, 2003, 2006-2015 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1999, 2003, 2006-2016 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

lib/getloadavg.c

 /* Get the system load averages.
 
-   Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2015 Free Software
+   Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2016 Free Software
    Foundation, Inc.
 
    NOTE: The canonical source of this file is maintained with gnulib.

lib/getopt.c

@@ -2,7 +2,7 @@
    NOTE: getopt is part of the C library, so if you don't know what
    "Keep this file name-space clean" means, talk to drepper@gnu.org
    before changing it!
-   Copyright (C) 1987-1996, 1998-2004, 2006, 2008-2015 Free Software
+   Copyright (C) 1987-1996, 1998-2004, 2006, 2008-2016 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 

lib/getopt.in.h

 /* Declarations for getopt.
-   Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2007, 2009-2015 Free Software
+   Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2007, 2009-2016 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 

lib/getopt1.c

 /* getopt_long and getopt_long_only entry points for GNU getopt.
-   Copyright (C) 1987-1994, 1996-1998, 2004, 2006, 2009-2015 Free Software
+   Copyright (C) 1987-1994, 1996-1998, 2004, 2006, 2009-2016 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 

lib/getopt_int.h

 /* Internal declarations for getopt.
-   Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2004, 2009-2015 Free Software
+   Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2004, 2009-2016 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 

lib/gettext.h

 /* Convenience header for conditional use of GNU <libintl.h>.
-   Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2015 Free Software
+   Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2016 Free Software
    Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify

lib/gettime.c

 /* gettime -- get the system clock
 
-   Copyright (C) 2002, 2004-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004-2007, 2009-2016 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

lib/gettimeofday.c

 /* Provide gettimeofday for systems that don't have it or for which it's broken.
 
-   Copyright (C) 2001-2003, 2005-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2007, 2009-2016 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

lib/gnulib.mk

 ## DO NOT EDIT! GENERATED AUTOMATICALLY!
 ## Process this file with automake to produce Makefile.in.
-# Copyright (C) 2002-2015 Free Software Foundation, Inc.
+# Copyright (C) 2002-2016 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

lib/group-member.c

 /* group-member.c -- determine whether group id is in calling user's group list
 
-   Copyright (C) 1994, 1997-1998, 2003, 2005-2006, 2009-2015 Free Software
+   Copyright (C) 1994, 1997-1998, 2003, 2005-2006, 2009-2016 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify