[PATCH] Fix FCFLAGS handing in libgfortran/configure.ac

[Tobias Schlüter]

Richard Guenther wrote:
> The current setup doesn't allow overriding of compile-flags with
> setting FCFLAGS.  Fixed by moving needed flags to AM_FCFLAGS.
> 
> Ok for mainline/4.0?

This looks like it's obvious, if one knows what autoconf's doing, which I
don't, but you probably do.  The comments preceding both hunks are out of sync
and need adjusting, though.

Thanks,
- Tobi