Use Gnulib ACL implementation, for benefit of Solaris etc.

* configure.ac: Remove -with-acl option, since Gnulib does that for
us now.
(LIBACL_LIBS): Remove; no longer needed.
* lib/Makefile.am (CLEANFILES, SUFFIXES): New (empty) macros,
for the benefit of the new ACL implementation.
* lib/makefile.w32-in (GNULIBOBJS): Add $(BLD)/acl-errno-valid.$(O).
($(BLD)/acl-errno-valid.$(O)): New rule.
* lib/acl-errno-valid.c, lib/acl-internal.h, lib/acl.h:
* lib/acl_entries.c, lib/errno.in.h, lib/file-has-acl.c:
* lib/qcopy-acl.c, lib/qset-acl.c, m4/acl.m4, m4/errno_h.m4:
New files, taken from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* admin/merge-gnulib (GNULIB_MODULES): Add qacl.
(GNULIB_TOOL_FLAGS): Do not avoid errno.
* etc/NEWS: Emacs is no longer limited to POSIX ACLs.  --disable-acl,
not --without-acl, since we're now using Gnulib's implementation.
* nt/config.nt (HAVE_ACL_SET_FILE): Rename from HAVE_POSIX_ACL.
* nt/inc/ms-w32.h (EOPNOTSUPP): New macro.
* src/Makefile.in (LIB_ACL): New macro.
(LIBACL_LIBS): Remove.
(LIBES): Use LIB_ACL, not LIBACL_LIBS.
* src/fileio.c: Include <acl.h>.
Use HAVE_ACL_SET_FILE rather than HAVE_POSIX_ACL.
(ACL_NOT_WELL_SUPPORTED): Remove.  All uses replaced by
!acl_errno_valid.
(Fcopy_file) [!WINDOWSNT]: Use qcopy_acl instead of rolling
it ourselves.

Fixes: debbugs:14295

2 files changed, 8 insertions, 2 deletions

diff --git a/admin/ChangeLog b/admin/ChangeLog
index 196acd4ffd9..ca25bf41918 100644
--- a/admin/ChangeLog
+++ b/admin/ChangeLog
@@ -1,3 +1,9 @@
+2013-05-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Use Gnulib ACL implementation, for benefit of Solaris etc. (Bug#14295)
+        * merge-gnulib (GNULIB_MODULES): Add qacl.
+        (GNULIB_TOOL_FLAGS): Do not avoid errno.
+
 2013-04-01  Paul Eggert  <eggert@cs.ucla.edu>
 
         Use UTF-8 for most files with non-ASCII characters (Bug#13936).
diff --git a/admin/merge-gnulib b/admin/merge-gnulib
index 100749191f0..c8bfe0dacc3 100755
--- a/admin/merge-gnulib
+++ b/admin/merge-gnulib
@@ -33,7 +33,7 @@ GNULIB_MODULES='
   getloadavg getopt-gnu gettime gettimeofday
   ignore-value intprops largefile lstat
   manywarnings memrchr mktime
-  pselect pthread_sigmask putenv readlink readlinkat
+  pselect pthread_sigmask putenv qacl readlink readlinkat
   sig2str socklen stat-time stdalign stdarg stdbool stdio
   strftime strtoimax strtoumax symlink sys_stat
   sys_time time timer-time timespec-add timespec-sub unsetenv utimens
@@ -42,7 +42,7 @@ GNULIB_MODULES='
 
 GNULIB_TOOL_FLAGS='
   --avoid=dup
-  --avoid=errno --avoid=fchdir --avoid=fcntl --avoid=fstat
+  --avoid=fchdir --avoid=fcntl --avoid=fstat
   --avoid=malloc-posix --avoid=msvc-inval --avoid=msvc-nothrow
   --avoid=open --avoid=openat-die --avoid=opendir
   --avoid=raise