Sync from coreutils. * .cppi-disable: Add regcomp.c, regex_internal.c, regex_internal.h, stat-time.h. * argmatch.h: Include verify.h (ARGMATCH_VERIFY): Use verify rather than rolling our own. (ARGMATCH_ASSERT): Remove; unused. * canonicalize.c: Assume STDC_HEADERS. * exclude.c: Include "strcase.h". * regex_internal.h [!defined _LIBC]: Likewise. * getusershell.c: Include stdio--.h rather than stdio.h and stdio-safer.h. (getusershell): Call fopen, not fopen_safer. * save-cwd.c: Include fcntl--.h rather than fcntl.h. Do not include unistd-safer.h. (save_cwd): Don't call fd_safer; no longer needed now that we include fcntl--.h. * modules/argmatch (Depends-on): Add verify. * modules/getloadavg (Depends-on): Depend on fcntl-safer, not unistd-safer. * modules/save-cwd (Depends-on): Likewise. * backupfile.m4, calloc.m4, chown.m4, cloexec.m4, dup2.m4: * fileblocks.m4, free.m4, ftruncate.m4, getcwd.m4, getpagesize.m4: * getugroups.m4, group-member.m4, idcache.m4, link-follow.m4: * mkstemp.m4, mktime.m4, mountlist.m4, nanosleep.m4, pathmax.m4: * physmem.m4, posixver.m4, putenv.m4, safe-read.m4, same.m4: * save-cwd.m4, stdio-safer.m4, unistd-safer.m4, unlinkdir.m4: * userspec.m4, xgetcwd.m4, xreadlink.m4: Don't bother checking for string.h, stdlib.h, unistd.h. * fts.m4 (gl_FUNC_FTS_CORE): Don't require AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK; that's now the lstat module's job. * jm-macros.m4 (gl_MACROS): Likewise. * prereq.m4 (gl_PREREQ): Add gl_FUNC_LSTAT. * backupfile.c: Use ARGMATCH_VERIFY, just in case. * posixtm.c (posixtime) [lint]: Initialize *all* of tm0, not just the .tm_year member, since otherwise gcc-4.0 would now warn about tm_zone, tm_gmtoff, tm_isdst, tm_yday, tm_wday. * quotearg.c (quotearg_n_options): Change code to be suboptimal, in order to avoid an unsuppressible warning from gcc on 64-bit systems. * lstat.m4 (gl_FUNC_LSTAT): Use AC_LIBSOURCES to require lstat.c and lstat.h. Remove obsolete comment. * xreadlink.m4: Use AC_LIBSOURCES and AC_LIBOBJ. * xstrtod.m4: Likewise.

#serial 14

dnl From Jim Meyering.
dnl Check for the nanosleep function.
dnl If not found, use the supplied replacement.
dnl

# Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005 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.

AC_DEFUN([gl_FUNC_NANOSLEEP],
[
 AC_LIBSOURCES([nanosleep.c])

 nanosleep_save_libs=$LIBS

 # Solaris 2.5.1 needs -lposix4 to get the nanosleep function.
 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
 AC_SEARCH_LIBS([nanosleep], [rt posix4],
                [test "$ac_cv_search_nanosleep" = "none required" ||
	         LIB_NANOSLEEP=$ac_cv_search_nanosleep])
 AC_SUBST([LIB_NANOSLEEP])

 AC_CACHE_CHECK([whether nanosleep works],
  jm_cv_func_nanosleep_works,
  [
   AC_REQUIRE([AC_HEADER_TIME])
   AC_CHECK_HEADERS_ONCE(sys/time.h)
   AC_TRY_RUN([
#   if TIME_WITH_SYS_TIME
#    include <sys/time.h>
#    include <time.h>
#   else
#    if HAVE_SYS_TIME_H
#     include <sys/time.h>
#    else
#     include <time.h>
#    endif
#   endif

    int
    main ()
    {
      struct timespec ts_sleep, ts_remaining;
      ts_sleep.tv_sec = 0;
      ts_sleep.tv_nsec = 1;
      exit (nanosleep (&ts_sleep, &ts_remaining) == 0 ? 0 : 1);
    }
	  ],
	 jm_cv_func_nanosleep_works=yes,
	 jm_cv_func_nanosleep_works=no,
	 dnl When crosscompiling, assume the worst.
	 jm_cv_func_nanosleep_works=no)
  ])
  if test $jm_cv_func_nanosleep_works = no; then
    AC_LIBOBJ(nanosleep)
    AC_DEFINE(nanosleep, rpl_nanosleep,
      [Define to rpl_nanosleep if the replacement function should be used.])
    gl_PREREQ_NANOSLEEP
  fi

 LIBS=$nanosleep_save_libs
])

# Prerequisites of lib/nanosleep.c.
AC_DEFUN([gl_PREREQ_NANOSLEEP],
[
  AC_CHECK_FUNCS_ONCE(siginterrupt)
])