update gnulib to b35c22af02271c8dd9844b98db17702b8bf2bd93

* lib/Makefile.am, lib/alloca.in.h, lib/arg-nonnull.h, lib/argmatch.c,
lib/argmatch.h, lib/argp-ba.c, lib/argp-eexst.c, lib/argp-fmtstream.c,
lib/argp-fmtstream.h, lib/argp-fs-xinl.c, lib/argp-help.c,
lib/argp-namefrob.h, lib/argp-parse.c, lib/argp-pin.c, lib/argp-pv.c,
lib/argp-pvh.c, lib/argp-xinl.c, lib/argp.h, lib/asnprintf.c,
lib/basename-lgpl.c, lib/c++defs.h, lib/c-ctype.h, lib/c-strcase.h,
lib/c-strcasecmp.c, lib/c-strcaseeq.h, lib/c-strncasecmp.c,
lib/config.charset, lib/dirname-lgpl.c, lib/dirname.h, lib/dosname.h,
lib/errno.in.h, lib/error.c, lib/error.h, lib/exitfail.c,
lib/exitfail.h, lib/fcntl.in.h, lib/filename.h, lib/float+.h,
lib/float.c, lib/float.in.h, lib/getopt-cdefs.in.h, lib/getopt-core.h,
lib/getopt-ext.h, lib/getopt-pfx-core.h, lib/getopt-pfx-ext.h,
lib/getopt.c, lib/getopt.in.h, lib/getopt1.c, lib/getopt_int.h,
lib/getprogname.c, lib/getprogname.h, lib/gettext.h,
lib/gettimeofday.c, lib/hard-locale.c, lib/hard-locale.h,
lib/intprops.h, lib/isatty.c, lib/itold.c, lib/limits.in.h,
lib/localcharset.c, lib/localcharset.h, lib/localtime-buffer.c,
lib/localtime-buffer.h, lib/lstat.c, lib/malloc.c, lib/malloca.c,
lib/malloca.h, lib/mbrtowc.c, lib/mbsinit.c, lib/memchr.c,
lib/mempcpy.c, lib/minmax.h, lib/mkstemp.c, lib/mkstemps.c,
lib/msvc-inval.c, lib/msvc-inval.h, lib/msvc-nothrow.c,
lib/msvc-nothrow.h, lib/pathmax.h, lib/printf-args.c,
lib/printf-args.h, lib/printf-parse.c, lib/printf-parse.h,
lib/progname.c, lib/progname.h, lib/quote.h, lib/quotearg.c,
lib/quotearg.h, lib/rawmemchr.c, lib/ref-add.sin, lib/ref-del.sin,
lib/size_max.h, lib/sleep.c, lib/stat-w32.c, lib/stat-w32.h,
lib/stat.c, lib/stdalign.in.h, lib/stdbool.in.h, lib/stddef.in.h,
lib/stdint.in.h, lib/stdio.in.h, lib/stdlib.in.h, lib/stpcpy.c,
lib/strcasecmp.c, lib/strchrnul.c, lib/streq.h,
lib/strerror-override.c, lib/strerror-override.h, lib/strerror.c,
lib/string.in.h, lib/strings.in.h, lib/stripslash.c,
lib/strncasecmp.c, lib/strndup.c, lib/strnlen.c, lib/strverscmp.c,
lib/sys_stat.in.h, lib/sys_time.in.h, lib/sys_types.in.h,
lib/sys_wait.in.h, lib/sysexits.in.h, lib/tempname.c, lib/tempname.h,
lib/time.in.h, lib/unistd.in.h, lib/vasnprintf.c, lib/vasnprintf.h,
lib/verify.h, lib/vsnprintf.c, lib/warn-on-use.h, lib/wchar.in.h,
lib/wctype.in.h, lib/xalloc-die.c, lib/xalloc-oversized.h,
lib/xalloc.h, lib/xmalloc.c, lib/xsize.h, m4/00gnulib.m4,
m4/absolute-header.m4, m4/alloca.m4, m4/argp.m4, m4/configmake.m4,
m4/dirname.m4, m4/double-slash-root.m4, m4/eealloc.m4, m4/errno_h.m4,
m4/error.m4, m4/exponentd.m4, m4/extensions.m4, m4/extern-inline.m4,
m4/fcntl-o.m4, m4/fcntl_h.m4, m4/float_h.m4, m4/getopt.m4,
m4/getprogname.m4, m4/gettimeofday.m4, m4/glibc21.m4,
m4/gnulib-cache.m4, m4/gnulib-common.m4, m4/gnulib-comp.m4,
m4/gnulib-tool.m4, m4/hard-locale.m4, m4/include_next.m4,
m4/intmax_t.m4, m4/inttypes_h.m4, m4/isatty.m4, m4/largefile.m4,
m4/limits-h.m4, m4/localcharset.m4, m4/locale-fr.m4, m4/locale-ja.m4,
m4/locale-zh.m4, m4/localtime-buffer.m4, m4/longlong.m4, m4/lstat.m4,
m4/malloc.m4, m4/malloca.m4, m4/math_h.m4, m4/mbrtowc.m4,
m4/mbsinit.m4, m4/mbstate_t.m4, m4/memchr.m4, m4/mempcpy.m4,
m4/minmax.m4, m4/mkstemp.m4, m4/mkstemps.m4, m4/mmap-anon.m4,
m4/msvc-inval.m4, m4/msvc-nothrow.m4, m4/multiarch.m4, m4/nocrash.m4,
m4/off_t.m4, m4/pathmax.m4, m4/printf.m4, m4/quote.m4, m4/quotearg.m4,
m4/rawmemchr.m4, m4/size_max.m4, m4/sleep.m4, m4/ssize_t.m4,
m4/stat.m4, m4/stdalign.m4, m4/stdbool.m4, m4/stddef_h.m4,
m4/stdint.m4, m4/stdint_h.m4, m4/stdio_h.m4, m4/stdlib_h.m4,
m4/stpcpy.m4, m4/strcase.m4, m4/strchrnul.m4, m4/strerror.m4,
m4/string_h.m4, m4/strings_h.m4, m4/strndup.m4, m4/strnlen.m4,
m4/strverscmp.m4, m4/sys_socket_h.m4, m4/sys_stat_h.m4,
m4/sys_time_h.m4, m4/sys_types_h.m4, m4/sys_wait_h.m4, m4/sysexits.m4,
m4/tempname.m4, m4/time_h.m4, m4/unistd_h.m4, m4/vasnprintf.m4,
m4/vsnprintf.m4, m4/warn-on-use.m4, m4/wchar_h.m4, m4/wchar_t.m4,
m4/wctype_h.m4, m4/wint_t.m4, m4/xalloc.m4, m4/xsize.m4: Update.
* lib/malloca.valgrind, lib/secure_getenv.c, m4/secure_getenv.m4:
Delete.
* lib/stat-time.c, lib/stat-time.h, m4/stat-time.m4: New files.

m4/extensions.m4

@@ -1,7 +1,7 @@
-# serial 15  -*- Autoconf -*-
+# serial 18  -*- Autoconf -*-
 # Enable extensions on systems that normally disable them.
 
-# Copyright (C) 2003, 2006-2017 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2006-2018 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.
@@ -68,6 +68,14 @@ dnl configure.ac when using autoheader 2.62.
 #ifndef _GNU_SOURCE
 # undef _GNU_SOURCE
 #endif
+/* Enable NetBSD extensions on NetBSD.  */
+#ifndef _NETBSD_SOURCE
+# undef _NETBSD_SOURCE
+#endif
+/* Enable OpenBSD extensions on NetBSD.  */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
 /* Enable threading extensions on Solaris.  */
 #ifndef _POSIX_PTHREAD_SEMANTICS
 # undef _POSIX_PTHREAD_SEMANTICS
@@ -110,6 +118,11 @@ dnl configure.ac when using autoheader 2.62.
 #ifndef _XOPEN_SOURCE
 # undef _XOPEN_SOURCE
 #endif
+/* Enable X/Open compliant socket functions that do not require linking
+   with -lxnet on HP-UX 11.11.  */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
 /* Enable general extensions on Solaris.  */
 #ifndef __EXTENSIONS__
 # undef __EXTENSIONS__
@@ -128,6 +141,8 @@ dnl configure.ac when using autoheader 2.62.
   AC_DEFINE([_ALL_SOURCE])
   AC_DEFINE([_DARWIN_C_SOURCE])
   AC_DEFINE([_GNU_SOURCE])
+  AC_DEFINE([_NETBSD_SOURCE])
+  AC_DEFINE([_OPENBSD_SOURCE])
   AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
   AC_DEFINE([__STDC_WANT_IEC_60559_ATTRIBS_EXT__])
   AC_DEFINE([__STDC_WANT_IEC_60559_BFP_EXT__])
@@ -153,6 +168,7 @@ dnl configure.ac when using autoheader 2.62.
           [ac_cv_should_define__xopen_source=yes])])])
   test $ac_cv_should_define__xopen_source = yes &&
     AC_DEFINE([_XOPEN_SOURCE], [500])
+  AC_DEFINE([_HPUX_ALT_XOPEN_SOCKET_API])
 ])# AC_USE_SYSTEM_EXTENSIONS
 
 # gl_USE_SYSTEM_EXTENSIONS