[toplevel PATCH] Make gcc a real host module

[Nathanael Nerode]

The patch in http://gcc.gnu.org/ml/gcc-patches/2004-07/msg02014.html:

2004-07-21 Paolo Bonzini <bonzini@gnu.org>

	* Makefile.def (host-modules): Add gcc.
	* Makefile.tpl (sorry): New rule.
	(configure-host, all-host, [+make_target+]-host,
	do-check, install-host): Do not add gcc as a special case.
	(host modules): Add a small special-casing for gcc.
	Export extra_make_flags through the environment.
	(maybe-configure-gcc, configure-gcc, maybe-all-gcc,
	all-gcc, maybe-check-gcc, check-gcc, maybe-install-gcc,
	install-gcc, other recursive targets for gcc): Remove.

This is fine.  This is precisely the correct way to make GCC a regular 
host module.  Please commit!  :-)

--Nathanael