[RFC] Additional targets for powerpc

[Roland McGrath]

> On Thu, Sep 22, 2005 at 03:56:50PM -0700, Roland McGrath wrote:
> > It's unfortunate that --with-cpu, --with-tune, et al, are not mentioned in
> > gcc or binutils' configure --help output.
> 
> If you would like to volunteer to make --help recursive... they are
> specifically options for the GCC subdirectory.

gcc/gcc/configure --help does not show them (but shows
e.g. --with-cpp-install-dir).