g77spec.c (lang_specific_driver): Adjust behavior of -v and --version for consistency with other front ends.

	* g77spec.c (lang_specific_driver): Adjust behavior of -v and
	--version for consistency with other front ends.  Remove large
	#if 0 block.  Do not add libraries to argv if there are no
	input files.
	(add_version_magic): Delete all references and dependent code.
	* lang-options.h: Delete -fnull-version.
	* lang-specs.h: Delete f77-version spec.

	* lex.c: Delete logic conditional on ffe_is_null_version() and
	now-unused label.
	* top.c: Delete ffe_is_null_version_ variable.
	(ffe_decode_option): Delete -fnull-version case.
	* top.h: Delete declaration of ffe_is_null_version_ and
	ffe_is_null_version(), ffe_set_is_null_version() macros.

From-SVN: r46883