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This incorporates:
2015-06-06 acl-permissions: pacify -Wsuggest-attribute=const
2015-06-05 stdio: Don't redefine gets when using C++
2015-06-05 acl-permissions: port to AIX, C89 HP-UX
2015-06-02 file-has-acl: fix build on Mac OS X 10
2015-06-01 gnulib-tool: concatenate lib_SOURCES to a single line
2015-06-01 pthread_sigmask: discount system version if a simple macro
2015-05-31 readlinkat: avoid OS X 10.10 trailing slash bug
* doc/misc/texinfo.tex, lib/acl-internal.h, lib/get-permissions.c:
* lib/readlinkat.c, lib/set-permissions.c, lib/stdio.in.h:
* m4/acl.m4, m4/pthread_sigmask.m4, m4/readlinkat.m4: Copy from gnulib.
* lib/gnulib.mk: Regenerate.

This incorporates:
2015-05-27 qacl: Reimplement qset_acl and qcopy_acl (Bug#20666)
2015-05-27 file-has-acl: Split feature tests again (Bug#20667)
2015-05-27 string: fix build failure on BSD/OSX with FORTIFY_SOURCE
2015-05-26 stdio: limit __gnu_printf__ witness to gcc 4.4+
2015-05-26 inttypes: force correct mingw PRIdMAX even without <stdio.h>
2015-05-26 stdio: fix probe on mingw under gcc 5.1
* admin/merge-gnulib (GNULIB_MODULES):
Replace qacl with qcopy-acl, since we don't need the rest of qacl.
* doc/misc/texinfo.tex, lib/acl-internal.c, lib/acl-internal.h:
* lib/inttypes.in.h, lib/qcopy-acl.c, lib/qset-acl.c:
* lib/string.in.h, m4/acl.m4, m4/stdio_h.m4:
Get latest versions from gnulib.
* lib/get-permissions.c, lib/set-permissions.c: New files.
* lib/gnulib.mk, m4/gnulib-comp.m4:
Regenerate.
* nt/gnulib.mk: Merge lib/gnulib.mk changes by hand.

This incorporates:
2015-04-29 extern-inline: no need for workaround in GCC 5.1
2015-04-26 file-has-acl: port to CentOS 6
* m4/acl.m4, m4/extern-inline.m4: Update from gnulib.

This incorporates:
2015-04-24 file-has-acl: new module, split from acl
2015-04-24 manywarnings: add GCC 5.1 warnings
2015-04-21 lstat: fix cross-compilation 'ln -s' problem
2015-04-15 qacl: Simplify HP-UX acl_nontrivial check
2015-04-15 acl: On Linux, check for acls without libacl
2015-04-14 tempname: avoid unused parameter warnings (trivial)
* lib/acl-internal.c: New file, from gnulib.
* lib/file-has-acl.c: Remove; no longer imported from gnulib.
* lib/acl-internal.h, lib/gnulib.mk, lib/qcopy-acl.c, lib/tempname.c:
* m4/acl.m4, m4/gnulib-comp.m4, m4/lstat.m4, m4/manywarnings.m4:
Update from gnulib.

* .gitignore: Add 'ChangeLog'.
* build-aux/gitlog-to-changelog: New file, from Gnulib.
* build-aux/gitlog-to-emacslog: New file.
* CONTRIBUTE: Document the revised workflow.
* Makefile.in (clean): Remove *.tmp and etc/*.tmp*
instead of just special cases.
(CHANGELOG_HISTORY_INDEX_MAX, CHANGELOG_N, gen_origin): New vars.
(ChangeLog, unchanged-history-files, change-history)
(change-history-commit): New rules.
* admin/admin.el (make-manuals-dist--1):
Don't worry about doc/ChangeLog.
* admin/authors.el: Add a FIXME.
* admin/make-tarball.txt:
* lisp/calendar/icalendar.el:
* lisp/gnus/deuglify.el:
* lisp/obsolete/gulp.el:
* lwlib/README:
Adjust to renamed ChangeLog history files.
* admin/merge-gnulib (GNULIB_MODULES): Add gitlog-to-changelog.
* admin/notes/repo: Call it 'master' a la Git, not 'trunk' a la Bzr.
Remove obsolete discussion of merging ChangeLog files.
New section "Maintaining ChangeLog history".
* build-aux/git-hooks/pre-commit:
Reject attempts to commit files named 'ChangeLog'.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* make-dist: Make and distribute top-level ChangeLog if there's a
.git directory.  Distribute the new ChangeLog history files
instead of scattered ChangeLog files.  Distribute the new files
gitlog-to-changelog and gitlog-to-emacslog.
Fixes: bug#19113

This incorporates:
2015-03-19 fdopendir: port better to MinGW
2015-03-18 fdopendir: fix typo in comment
2015-02-24 glob, etc.: port to MSVC v18 on MS-Windows 8.1
* lib/dirent.in.h, lib/fdopendir.c: Update from gnulib.
* lib/dirfd.c, m4/dirfd.m4: New files from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.

* lib/getdtablesize.c, m4/dup2.m4, m4/fcntl.m4:
Update from gnulib, incorporating:
2015-02-23 dup2: doc and test for Android bug
2015-02-23 Replace dup2() on Android
2015-02-22 Android doesn't define RLIM_SAVED_*

* doc/misc/texinfo.tex: Update from gnulib.
* lib/getdtablesize.c, lib/getopt.c, lib/signal.in.h, lib/tempname.c:
* lib/tempname.h, m4/dup2.m4, m4/fcntl.m4, m4/getdtablesize.m4:
Update from gnulib, incorporating:
2015-02-20 getdtablesize: port better for Android
2015-02-19 fcntl: Fix cross compiling
2015-02-18 dup2, fcntl: cross-compile better for Android
2015-02-18 getopt: don't crash on memory exhaustion
2015-02-17 tempname: allow compilation with C++ (trivial)
2015-02-17 dup2, fcntl: port to AIX
2015-02-16 getdtablesize, dup2, fcntl: port to Android
2015-02-11 getdtablesize, signal_h: Fix Android build
2015-02-11 maint: various whitespace cleanups in tempname

This attempts to repair problems introduced by the bad merge
5491fd10.  The easiest way for me
to fix the badly-merged gnulib files was to run
'admin/merge-gnulib', so I did that, which also imported the
following changes:
* build-aux/update-copyright, m4/gnulib.m4:
Update from gnulib, incorporating:
2015-01-15 time: port to MinGW32 3.21
2015-01-15 update-copyright: apply to self
2015-01-11 update-copyright: recognize groff's \(co marker

* lib/stdio.in.h, m4/stdio_h.m4: Update from gnulib, incorporating:
2015-01-05 stdio: fix use of PRIdMAX on modern mingw

2015-01-01 version-etc: new year

Run admin/update-copyright.

* admin/merge-gnulib (GNULIB_MODULES): Add stpcpy.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* lib/stpcpy.c, m4/stpcpy.m4: New files, from gnulib.
* lib-src/ebrowse.c (sym_scope_1, operator_name, open_file):
* lib-src/emacsclient.c (get_server_config, set_local_socket)
(start_daemon_and_retry_set_socket):
* lib-src/etags.c (main, C_entries, relative_filename):
* lib-src/pop.c (sendline):
* lib-src/update-game-score.c (main):
* lwlib/xlwmenu.c (resource_widget_value):
* src/callproc.c (child_setup):
* src/dbusbind.c (xd_signature_cat):
* src/doc.c (get_doc_string, Fsnarf_documentation):
* src/editfns.c (Fuser_full_name):
* src/frame.c (xrdb_get_resource):
* src/gtkutil.c (xg_get_file_with_chooser):
* src/tparam.c (tparam1):
* src/xfns.c (xic_create_fontsetname):
* src/xrdb.c (gethomedir, get_user_db, get_environ_db):
* src/xsmfns.c (smc_save_yourself_CB):
Rewrite to avoid the need for strcat, typically by using stpcpy
and/or lispstpcpy.  strcat tends to be part of O(N**2) algorithms.
* src/doc.c (sibling_etc):
* src/xrdb.c (xdefaults):
Now a top-level static constant.

2014-12-20 utimens: remove unnecessary assert
2014-12-16 stdalign: port better to HP compilers
2014-12-16 stdalign: work around Apple GCC 4.0 bug
* lib/stdalign.in.h, lib/utimens.c, m4/stdalign.m4: Update from gnulib.

2014-12-12 stddef: support C11's max_align_t
2014-12-08 apply _GL_ATTRIBUTE_PURE to some inline functions
2014-12-02 support GNU format printf and scanf on mingw
* doc/misc/texinfo.tex, lib/stat-time.h, lib/stddef.in.h:
* lib/timespec.h, m4/extensions.m4, m4/stddef_h.m4, m4/stdio_h.m4:
Update from gnulib.
* lib/gnulib.mk: Regenerate.

2014-11-14 extern-inline: update commentary about GCC bugs
2014-11-06 unistd: port to iOS
2014-11-04 update from texinfo
* doc/misc/texinfo.tex, lib/unistd.in.h, m4/extern-inline.m4:
Update from gnulib.

This incorporates:
2014-10-18 readlinkat: port to AIX 7.1
2014-10-07 fcntl: fix error reporting by dupfd
* lib/fcntl.c, lib/readlinkat.c, lib/unistd.in.h, m4/readlinkat.m4:
* m4/unistd_h.m4: Update from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.

This incorporates:
2014-09-11 fcntl-h: fix compilation with Intel C++ compiler
2014-09-04 pthread, pthread_sigmask, threadlib: port to Ubuntu 14.04

2014-09-02 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
2014-09-01 manywarnings: add GCC 4.9 warnings
* m4/gnulib-common.m4, m4/manywarnings.m4: Update from gnulib.

It's not safe to call qsort or qsort_r, since they have undefined
behavior if the user-specified predicate is not a total order.
Also, watch out for garbage-collection while sorting vectors.
* admin/merge-gnulib (GNULIB_MODULES): Add vla.
* configure.ac (qsort_r): Remove, as we no longer use qsort-like
functions.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* lib/vla.h, m4/vararrays.m4: New files, copied from gnulib.
* lib/stdlib.in.h, m4/stdlib_h.m4: Sync from gnulib, incorporating:
2014-08-29 qsort_r: new module, for GNU-style qsort_r
The previous two files' changes are boilerplate generated by
admin/merge-gnulib, and should not affect Emacs.
* src/fns.c: Include <vla.h>.
(sort_vector_predicate) [!HAVE_QSORT_R]: Remove.
(sort_vector_compare): Remove, replacing with ....
(inorder, merge_vectors, sort_vector_inplace, sort_vector_copy):
... these new functions.
(sort_vector): Rewrite to use the new functions.
GCPRO locals, since the predicate can invoke the GC.
Since it's in-place return void; caller changed.
(merge): Use 'inorder', for clarity.

Fixes: debbugs:18361

2014-08-04 extern-inline: port to FreeBSD, DragonFly
* lib/gnulib.mk: Regenerate (comment change only).
* m4/extern-inline.m4: Update from gnulib.

* configure.ac (HAVE_TIMERFD): Define only if TFD_CLOEXEC works,
since the code leaked file descriptors to children when !TFD_CLOEXEC.
(HAVE_TIMERFD_CLOEXEC): Remove; no longer used.
* m4/clock_time.m4 (gl_CLOCK_TIME): Don't check for clock_getres.
This reverts the previous change to this file, so it matches
gnulib again.
* src/atimer.c (TIMERFD_CREATE_FLAGS): Remove; we now assume TFD_CLOEXEC.
(alarm_timer, alarm_timer_ok, set_alarm, init_atimer):
Fall back on timer_create if timerfd_create fails at runtime.
(resolution) [HAVE_CLOCK_GETRES]: Remove; we now rely on the
kernel primitives to do resolution.  All uses removed.
(timerfd) [!HAVE_TIMERFD]: Define to be -1, for convenience.
(turn_on_atimers): Clear timer_create-based timers too,
for consistency.

* configure.ac (toplevel): Check whether GNU/Linux-specific
timerfd functions and macros are available.
* m4/clock_time.m4 (gl_CLOCK_TIME): Check for clock_getres as well.
* src/atimer.c (toplevel) [HAVE_TIMERFD]: Include sys/timerfd.h.
(toplevel): Rename alarm_timer_ok to special_timer_available.
[HAVE_TIMERFD]: Declare timerfd.
[HAVE_CLOCK_GETRES]: Declare resolution.
(start_atimer) [HAVE_CLOCK_GETRES]: Round up timestamp to
system timer resolution.
(set_alarm) [HAVE_TIMERFD]: Use timerfd_settime.
(timerfd_callback) [HAVE_TIMERFD]: New function.
(atimer_result, debug_timer_callback, Fdebug_timer_check)
[ENABLE_CHECKING]: New function for the sake of automated tests.
(init_atimer) [HAVE_TIMERFD]: Setup timerfd.
[HAVE_CLOCK_GETRES]: Likewise for system timer resolution.
[ENABLE_CHECKING]: Defsubr test function.
* src/atimer.h (timerfd_callback) [HAVE_TIMERFD]: Add prototype.
* src/lisp.h (add_timer_wait_descriptor) [HAVE_TIMERFD]: Likewise.
* src/process.c (add_timer_wait_descriptor) [HAVE_TIMERFD]: New function.
* test/automated/timer-tests.el (timer-tests-debug-timer-check): New test.

Most of this patch is from Dmitry Antipov, in:
http://lists.gnu.org/archive/html/emacs-devel/2014-06/msg00263.html
* configure.ac (WERROR_CFLAGS): Add -Wredundant-decls.
* lib-src/emacsclient.c (getenv): Remove decl.
* lib-src/make-docfile.c (write_globals): Add ATTRIBUTE_CONST for
Fbyteorder, Ftool_bar_height, Fmax_char, Fidentity.
* lwlib/lwlib-Xm.c (lw_motif_widget_p, xm_update_one_value)
(xm_create_dialog, xm_destroy_instance, xm_popup_menu)
(xm_set_keyboard_focus, xm_set_main_areas): Remove decls.
* src/commands.h (update_mode_lines):
* src/frame.h (Qbackground_color, Qforeground_color)
(x_set_menu_bar_lines):
* src/ftfont.c (ftfont_font_format):
* src/intervals.h (Qkeymap, Qfont):
* src/keyboard.c (timer_check, safe_run_hooks, Qregion_extract_function):
* src/lisp.h (Ffboundp, Qnil, Qt, Qlambda, Qintegerp, Qwholenump)
(Qsymbolp, Qlisp, Qconsp, Qstringp, Qarrayp, Qbufferp, Qmarkerp)
(Qvectorp, Qbuffer_or_string_p, Qchar_table_p, Qvector_or_char_table_p)
(Qfloatp, Qnumberp, Qfont_spec, Qfont_entity, Qfont_object)
(Fbyteorder, wrong_type_argument, Fmax_char, syms_of_composite)
(Fidentity, extract_float, init_display, syms_of_display, Qdisplay):
(Qimage, Qbox, redisplay_preserve_echo_area, char_table_ref)
(char_table_set, char_table_translate, Qautoload, Qbottom, Qtop)
(Qvisible, Qfont, Qfront_sticky, Qrear_nonsticky, init_sigio)
(Qtool_bar, Qheader_line):
* src/macros.c (Fexecute_kbd_macro):
* src/xdisp.c (Ftool_bar_height, Ftool_bar_height):
* src/xterm.c (x_delete_terminal, XSetIMValues):
* src/xterm.h (x_set_window_size, x_query_color, x_get_focus_frame)
(x_implicitly_set_name, popup_activated)
(widget_store_internal_border):
Remove redundant decls.
* src/frame.c [USE_X_TOOLKIT]: Include widget.h.
* src/keyboard.c (Fexit_recursive_edit, Fabort_recursive_edit):
Remove _Noreturn, as make-docfile now does that for us.
* src/lisp.h (DEFUN): Don't declare fnname here; rely on make-docfile.
(Qregion_extract_function): New decl.
* src/window.c, src/xfns.c: Include menu.h.

This fixes a bug with the shell freezing.  See:
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17598#185
Merge from gnulib, incorporating:
2014-05-31 dup2, fcntl, fcntl-h: port to AIX 7.1
* lib/fcntl.in.h, m4/dup2.m4, m4/fcntl.m4:
Update from gnulib.

This incorporates:
2014-06-02 acl: apply pure attribute to two functions
2014-06-01 gnulib-common.m4: add _GL_UNUSED_LABEL
2014-05-31 dup2, fcntl, fcntl-h: port to AIX 7.1
2014-05-30 ftoastr: work around compiler bug in IBM xlc 12.1
* lib/acl-internal.h, lib/fcntl.in.h, lib/ftoastr.h:
* m4/dup2.m4, m4/fcntl.m4, m4/gnulib-common.m4:
Update from gnulib.

sigprocmask isn't portable in a multithreaded process.
* configure.ac (gl_THREADLIB): Remove dummy.
Merge from gnulib, incorporating:
2014-05-28 pthread_sigmask, timer-time: use gl_THREADLIB only if needed
* m4/pthread_sigmask.m4, m4/timer_time.m4: Update from gnulib.
* src/Makefile.in (LIB_PTHREAD_SIGMASK): Remove; all uses removed.

Fixes: debbugs:17561

* lib/stdarg.in.h, lib/stdbool.in.h, m4/stdarg.m4, m4/stdbool.m4:
Remove.
* configure.ac (_AC_PROG_CC_C89): Define a dummy, to keep 'configure'
smaller.
(gl_PROG_CC_C99): Use this to get C99 or later.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* admin/merge-gnulib (GNULIB_MODULES): Remove stdarg, stdbool.
(GNULIB_TOOL_FLAGS): Avoid stdarg, stdbool.
* doc/lispref/internals.texi (C Dialect): Document this.
* etc/NEWS: Document this.
* nt/gnulib.mk: Remove stdarg and stdbool modules.
* src/bytecode.c (B__dummy__): Remove.
* src/conf_post.h (bool_bf) [!NS_IMPL_GNUSTEP]: Use bool.
(FLEXIBLE_ARRAY_MEMBER): Now always empty.
* src/dbusbind.c (XD_DEBUG_MESSAGE) [!DBUS_DEBUG]:
* src/regex.c (DEBUG_PRINT): Assume varargs macros.
* src/lisp.h (DEFUN_FUNCTION_INIT): Remove.  All uses now assume C99.

Fixes: debbugs:17487

* INSTALL: Prefer './configure FOO=BAR' to 'FOO=BAR ./configure'.
* INSTALL.REPO: pkg-config is no longer required to build from
the repository.
* autogen.sh: Don't check for pkg-config.
(progs): Remove pkg-config.
(pkg_config_min, AUTORECONF_ENV, env_space, ACLOCAL_PATH):
Remove.  All uses removed.
* m4/pkg.m4: New file, built by admin/merge-pkg-config.
* configure.ac: Remove unnecessary m4_pattern_forbid of ^PKG_ and
an AC_ARG_VAR of PKG_CONFIG_PATH.  pkg.m4 does that for us.
(EMACS_CHECK_MODULES): Remove workaround for old pkg-config bug,
as we use pkg.m4 from a newer pkg-config.
* admin/merge-pkg-config: New script.
* admin/notes/copyright: Update for m4/*.m4, in particular m4/pkg.m4.
* etc/NEWS: Prefer './configure FOO=BAR' to 'FOO=BAR ./configure'.
* etc/PROBLEMS (Build-time-problems): Remove pkg-config problem
that is no longer an issue.
* nt/INSTALL: Remove no-longer-needed notes about pkg-config.

This incorporates:
2014-03-04 stdint: fix missing SIZE_MAX on Android
2013-03-02 sys_types: avoid autoconf warning about gl_SYS_TYPES_H
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* lib/stdint.in.h, lib/sys_types.in.h, m4/sys_types_h.m4:
Update from gnulib.

Fix oversight preventing lib/sys/types.h from being generated.
* admin/merge-gnulib (GNULIB_TOOL_FLAGS): Don't avoid sys_types.

2014-02-21 timer: fix uClibc detection of threading
2014-02-21 maintainer-makefiles: provide AC_PROG_SED for older autoconf
* texinfo.tex: Update from gnulib.

This incorporates:
2014-01-22 qacl: check for fchmod
* m4/acl.m4: Update from gnulib.

This incorporates:
2014-01-07 update from texinfo
2014-01-06 md5, sha1, sha256, sha512: support older autoconf

This incorporates:
2014-01-02 manywarnings: remove -Wmudflap
This ports better to GCC 4.9-to-be.

* admin/merge-gnulib (GNULIB_MODULES): Add update-copyright.
* admin/notes/years: Mention admin/update-copyright.
* admin/update-copyright: New file.
* build-aux/update-copyright: New file.
* make-dist: Distribute it.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* msdos/autogen/Makefile.in: Update copyright year.

2013-12-17 gettimeofday: port recent C++ fix to Emacs
2013-12-17 gettimeofday: fix C++ crosscompilation
2013-12-17 qacl: port to Windows better
* lib/file-has-acl.c, lib/time.in.h, m4/gettimeofday.m4, m4/time_h.m4:
Update from gnulib.
* lib/gnulib.mk: Regenerate.

This scorches the earth and waits for spring;
see Ted Zlatanov and Stefan Monnier in
<http://lists.gnu.org/archive/html/emacs-devel/2013-12/msg00323.html>.
* configure.ac (with_openssl_default, HAVE_LIB_CRYPTO): Remove.
Do not say whether Emacs is configured to use a crypto library,
since it's no longer an option.
(gl_CRYPTO_CHECK): Define a dummy.
* lib/gl_openssl.h, m4/gl-openssl.m4: Remove.
* admin/merge-gnulib: Remove lib/gl_openssh.h and m4/gl-openssl.m4.
* src/Makefile.in (LIB_CRYPTO): Remove.
(LIBES): Don't use it.

Merge from gnulib, incorporating:
2013-12-07 md5, sha1, sha256, sha512: fix link error with partial lib
* m4/gl-openssl.m4: Update from gnulib.

On commonly used platform libcrypto uses architecture-specific
assembly code, which is significantly faster than the C code we
were using.  See Pádraig Brady's note in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-12/msg00000.html>.
Merge from gnulib, incorporating:
2013-12-07 md5, sha1, sha256, sha512: add gl_SET_CRYPTO_CHECK_DEFAULT
2013-12-07 md5, sha1, sha256, sha512: add 'auto', and set-default method
2013-12-04 include_next: minimize code duplication
2013-12-03 md5, sha1, sha256, sha512: support mandating use of openssl
2013-12-02 md5, sha1, sha256, sha512: use openssl routines if available
* configure.ac (--without-all): Set with_openssl_default too.
Use gl_SET_CRYPTO_CHECK_DEFAULT to default to 'auto'.
(HAVE_LIB_CRYPTO): New var.
Say whether Emacs is configured to use a crypto library.
* lib/gl_openssl.h, m4/absolute-header.m4, m4/gl-openssl.m4:
New files, copied from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* lib/md5.c, lib/md5.h, lib/sha1.c, lib/sha1.h:
* lib/sha256.c, lib/sha256.h, lib/sha512.c, lib/sha512.h:
* m4/include_next.m4, m4/md5.m4, m4/sha1.m4, m4/sha256.m4, m4/sha512.m4:
Update from gnulib.
* src/Makefile.in (LIB_CRYPTO): New macro.
(LIBES): Use it.