* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.

	* posix/getopt1.c: Include <config.h>, not "config.h".

As the final act in this patchset, adjust the "This file is part of
the GNU C Library" message at the top of each file to indicate which
files are synced with gnulib.

	* posix/bits/getopt_core.h, posix/bits/getopt_ext.h
	* posix/getopt.c, posix/getopt1.c, posix/getopt_int.h:
	Mention in top-of-file boilerplate that these files are shared
	with gnulib.
	* posix/getopt.h, posix/bits/getopt_posix.h:
	Mention in top-of-file boilerplate that these files are NOT shared
	with gnulib, unlike the rest of the getopt implementation.

For standards compliance, getopt, getopt_long, and getopt_long_only in
glibc have to take 'char *const *argv' even though they can mutate the
array.  gnulib has tried to clean this up as much as possible: all the
internal functions use 'char **argv', and when used standalone, so do
getopt_long and getopt_long_only.

Also brought over are __nonnull annotations, corrections to documentation,
and apparently it is no longer necessary to worry about conflicting
prototypes for getopt.  The macroification of the definitions of
getopt and __posix_getopt goes beyond what is currently in gnulib.

At this point getopt1.c and getopt_int.h are identical to their gnulib
versions.

	* posix/getopt.h: Add backup definition of __nonnull for
	consistency with gnulib.  Define __getopt_argv_const to const
	if not already defined.
	(getopt): Update doc comment from gnulib.  Prototype
	unconditionally.  Add __nonnull annotation.
	(__posix_getopt): Add __nonnull annotation.
	(getopt_long, getopt_long_only): Use __getopt_argv_const in
	prototypes for consistency with gnulib.  Add __nonnull
	annotations.
	* posix/getopt.c (_getopt_initialize, _getopt_internal_r)
	(getopt_internal): Change 'argv' argument to type 'char **'.
	Remove now-unnecessary casts.
	(getopt, __posix_getopt): Eliminate repetition with a macro.
	Cast 'argv' to 'char **' when calling _getopt_internal.
	* posix/getopt1.c (getopt_long, getopt_long_only):
	Use __getopt_argv_const for consistency with gnulib.
	Cast 'argv' to 'char **' when calling _getopt_internal.
	(_getopt_long_r, _getopt_long_only_r):
	Change 'argv' argument to type 'char **'.
	(main): Constify 'long_options'.
	* posix/getopt_int.h (getopt_internal, _getopt_internal_r)
	(_getopt_long_r, _getopt_long_only_r):
	Change 'argv' argument to type 'char **'.

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.

I'm not sure whether this is official GNU style now, but `...' quotes
haven't looked properly balanced in most people's terminal fonts since
2001ish? and gnulib has chosen to switch over to '...' quotes.
I'm merging this separately from the other changes in gnulib because
it's very mechanical.

	* posix/getopt.c, posix/getopt.h, posix/getopt1.c, posix/getopt_int.h:
	Use '...' instead of `...' for quotation marks inside
	comments and strings.