add gnulib `times' module

* lib: Add `times' module.  Should fix socket.c on MinGW.  Thanks to Eli
  Zaretskii for the report.

m4/gnulib-cache.m4

@@ -27,7 +27,7 @@
 
 
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=3 --no-conditional-dependencies --libtool --macro-prefix=gl --no-vc-files accept alignof alloca-opt announce-gen autobuild bind byteswap canonicalize-lgpl ceil clock-time close connect dirfd duplocale environ extensions flock floor fpieee frexp full-read full-write func gendocs getaddrinfo getpeername getsockname getsockopt git-version-gen gitlog-to-changelog gnu-web-doc-update gnupload havelib iconv_open-utf inet_ntop inet_pton isinf isnan ldexp lib-symbol-versions lib-symbol-visibility libunistring listen localcharset locale log1p maintainer-makefile malloc-gnu malloca nl_langinfo nproc open pipe2 putenv recv recvfrom regex rename select send sendto setenv setsockopt shutdown socket stat-time stdlib strftime striconveh string sys_stat trunc verify vsnprintf warnings wchar
+#   gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=3 --no-conditional-dependencies --libtool --macro-prefix=gl --no-vc-files accept alignof alloca-opt announce-gen autobuild bind byteswap canonicalize-lgpl ceil clock-time close connect dirfd duplocale environ extensions flock floor fpieee frexp full-read full-write func gendocs getaddrinfo getpeername getsockname getsockopt git-version-gen gitlog-to-changelog gnu-web-doc-update gnupload havelib iconv_open-utf inet_ntop inet_pton isinf isnan ldexp lib-symbol-versions lib-symbol-visibility libunistring listen localcharset locale log1p maintainer-makefile malloc-gnu malloca nl_langinfo nproc open pipe2 putenv recv recvfrom regex rename select send sendto setenv setsockopt shutdown socket stat-time stdlib strftime striconveh string sys_stat times trunc verify vsnprintf warnings wchar
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([gnulib-local])
@@ -103,6 +103,7 @@ gl_MODULES([
   striconveh
   string
   sys_stat
+  times
   trunc
   verify
   vsnprintf

m4/gnulib-comp.m4

@@ -197,10 +197,12 @@ AC_DEFUN([gl_EARLY],
   # Code from module sys_socket:
   # Code from module sys_stat:
   # Code from module sys_time:
+  # Code from module sys_times:
   # Code from module sys_types:
   # Code from module sys_uio:
   # Code from module time:
   # Code from module time_r:
+  # Code from module times:
   # Code from module trunc:
   # Code from module unistd:
   # Code from module unistr/base:
@@ -685,6 +687,8 @@ AC_SUBST([LTALLOCA])
   AC_PROG_MKDIR_P
   gl_HEADER_SYS_TIME_H
   AC_PROG_MKDIR_P
+  gl_SYS_TIMES_H
+  AC_PROG_MKDIR_P
   gl_SYS_TYPES_H
   AC_PROG_MKDIR_P
   gl_HEADER_SYS_UIO
@@ -696,6 +700,11 @@ AC_SUBST([LTALLOCA])
     gl_PREREQ_TIME_R
   fi
   gl_TIME_MODULE_INDICATOR([time_r])
+  gl_FUNC_TIMES
+  if test $HAVE_TIMES = 0; then
+    AC_LIBOBJ([times])
+  fi
+  gl_SYS_TIMES_MODULE_INDICATOR([times])
   gl_FUNC_TRUNC
   if test $HAVE_DECL_TRUNC = 0 || test $REPLACE_TRUNC = 1; then
     AC_LIBOBJ([trunc])
@@ -1046,10 +1055,12 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/sys_socket.in.h
   lib/sys_stat.in.h
   lib/sys_time.in.h
+  lib/sys_times.in.h
   lib/sys_types.in.h
   lib/sys_uio.in.h
   lib/time.in.h
   lib/time_r.c
+  lib/times.c
   lib/trunc.c
   lib/unistd.c
   lib/unistd.in.h
@@ -1211,10 +1222,12 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/sys_socket_h.m4
   m4/sys_stat_h.m4
   m4/sys_time_h.m4
+  m4/sys_times_h.m4
   m4/sys_types_h.m4
   m4/sys_uio_h.m4
   m4/time_h.m4
   m4/time_r.m4
+  m4/times.m4
   m4/tm_gmtoff.m4
   m4/trunc.m4
   m4/unistd_h.m4

m4/sys_times_h.m4

@@ -0,0 +1,51 @@
+# Configure a replacement for <sys/times.h>.
+# serial 8
+
+# Copyright (C) 2008-2013 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.
+
+# Written by Simon Josefsson.
+
+AC_DEFUN([gl_SYS_TIMES_H],
+[
+  AC_REQUIRE([gl_SYS_TIMES_H_DEFAULTS])
+
+  dnl <sys/times.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([sys/times.h])
+  if test $ac_cv_header_sys_times_h = yes; then
+    HAVE_SYS_TIMES_H=1
+    AC_CHECK_TYPES([struct tms], [], [HAVE_STRUCT_TMS=0], [[
+#include <sys/times.h>
+      ]])
+  else
+    HAVE_SYS_TIMES_H=0
+    HAVE_STRUCT_TMS=0
+  fi
+  AC_SUBST([HAVE_SYS_TIMES_H])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+/* Some systems have incomplete headers.  */
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
+# include <time.h>
+#endif
+#include <sys/times.h>
+    ]], [times])
+])
+
+AC_DEFUN([gl_SYS_TIMES_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_SYS_TIMES_H_DEFAULTS])
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+])
+
+AC_DEFUN([gl_SYS_TIMES_H_DEFAULTS],
+[
+  GNULIB_TIMES=0;     AC_SUBST([GNULIB_TIMES])
+  HAVE_STRUCT_TMS=1;  AC_SUBST([HAVE_STRUCT_TMS])
+  HAVE_TIMES=1;       AC_SUBST([HAVE_TIMES])
+])

m4/times.m4

@@ -0,0 +1,14 @@
+# times.m4 serial 2
+dnl Copyright (C) 2009-2013 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_TIMES],
+[
+  AC_REQUIRE([gl_SYS_TIMES_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([times])
+  if test $ac_cv_func_times = no; then
+    HAVE_TIMES=0
+  fi
+])