* Makefile.in (GCOV_OBJS): Add version.o.
	* gcov.c: Include "version.h" and <getopt.h>.
	(gcov_version_string): Remove.
	(print_usage): Take a parameter to determine whether this is a
	call from --help or an error message.  Give fuller output that
	follows the GNU Coding Standards for --help.
	(print_version): New function.
	(options): New.
	(process_args): Use getopt_long.  Support long options.  Follow
	GNU Coding Standards for --help and --version.
	* doc/gcov.texi: Document long options.
	Addresses part of PR other/704.

From-SVN: r46703