* configure: Move gcc_version_trigger stuff from here...

	* configure: Move gcc_version_trigger stuff from here...
	* configure.in: ...to here.

	* configure.in: Separate subconfigure options added by this file from
	options given by the user.  Add machinery to put args for host
	subconfigures into the Makefile.

	* Makefile.tpl: Remove 'vault' targets.
	* Makefile.tpl: Reorder and comment dependencies.
	* Makefile.in: Regenerate.