[PATCH] libgfortran/Makefile.am -- Use M4 environmental variable

[FX Coudert]

> 2006-10-05  Steven G. Kargl  <kargl@gcc.gnu.org>
>
> 	* Makefile.am: Use $(M4) instead of m4.
> 	* Makefile.in: Regenerated.
>
> OK for trunk and 4.1?

OK for both. Thanks Steve!

FX