Makefile.in (install-driver): Install driver as $(target_alias)-gcc-$(version).

Makefile.in (install-driver): Install driver as $(target_alias)-gcc-$(version).

	* Makefile.in (install-driver): Install driver as
	$(target_alias)-gcc-$(version).
	* gcc.c (spec_version): Make const.
	(process_command): Handle -V and -b by using exec.
	* doc/invoke.texi (Target Options): Restore -V option,
	update docs for -b option.

From-SVN: r54417