Review of --enable-gold=both patch

[Ralf Wildenhues]

* Matthias Klose wrote on Fri, Oct 29, 2010 at 05:41:06PM CEST:
> Fine with me to implement this, if there is consensus, but it won't be
> before next week.

Whatever you end up implementing, it needs updates to gcc/doc.

I'd say that binutils/README and binutils/doc/binutils.texi could also
benefit from seeing information about gold and these switches, but I'm
not sure about the usual policy here.

Thanks,
Ralf