getopt: merge straightforward changes from gnulib

This covers changes with little or no consequences when the code is
used in glibc.

	* posix/getopt_int.h: Include getopt.h.
	Use impl-namespace names for all arguments to _getopt_internal and
	_getopt_internal_r.
	Declare __ordering enum outside the struct.
	Harmonize comments with gnulib.
	* posix/getopt1.c: Simplify #ifdeffage at top of file. Remove
	ELIDE_CODE logic entirely.  Move inclusion of stdlib.h to
	#ifdef TEST block and make unconditional.  Do not define NULL.
	* posix/getopt.c: Partial merge from gnulib, covering the
	initial includes and global declarations, commentary, and
	a couple of semantically-neutral code changes.

1 files changed, 4 insertions, 39 deletions

diff --git a/posix/getopt1.c b/posix/getopt1.c
index b9a853804a..b4ae6e48f2 100644
--- a/posix/getopt1.c
+++ b/posix/getopt1.c
@@ -16,48 +16,13 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifdef HAVE_CONFIG_H
-#include <config.h>
+#ifndef _LIBC
+#include "config.h"
 #endif
 
-#ifdef _LIBC
-# include <getopt.h>
-#else
-# include "getopt.h"
-#endif
+#include "getopt.h"
 #include "getopt_int.h"
 
-#include <stdio.h>
-
-/* Comment out all this code if we are using the GNU C Library, and are not
-   actually compiling the library itself.  This code is part of the GNU C
-   Library, but also included in many other GNU distributions.  Compiling
-   and linking in this code is a waste when using the GNU C library
-   (especially if it is a shared library).  Rather than having every GNU
-   program understand 'configure --with-gnu-libc' and omit the object files,
-   it is simpler to just do this in the source for each such file.  */
-
-#define GETOPT_INTERFACE_VERSION 2
-#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
-#include <gnu-versions.h>
-#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
-#define ELIDE_CODE
-#endif
-#endif
-
-#ifndef ELIDE_CODE
-
-
-/* This needs to come after some library #include
-   to get __GNU_LIBRARY__ defined.  */
-#ifdef __GNU_LIBRARY__
-#include <stdlib.h>
-#endif
-
-#ifndef	NULL
-#define NULL 0
-#endif
-
 int
 getopt_long (int argc, char *const *argv, const char *options,
 	     const struct option *long_options, int *opt_index)
@@ -95,11 +60,11 @@ _getopt_long_only_r (int argc, char *const *argv, const char *options,
 			     1, d, 0);
 }
 
-#endif	/* Not ELIDE_CODE.  */
 
 #ifdef TEST
 
 #include <stdio.h>
+#include <stdlib.h>
 
 int
 main (int argc, char **argv)