Do not define -mlong-double-128 on ppc when --without-fp specified?

[Lior Balkohen]

> As far as I can tell the (embedded toolchain) folks who would care are
> still back on gcc-3.3 and glibc-2.3 anyway. So I don't see this as an
> emergency. If not correct someone should tell me.

No, this isn't an emergency.  I used to work with gcc-3.4 glibc-2.3
combinations, I certainly was disappointed when I started trying
glibc-2.4.  I still hope there will be a working powerpc/nofpu port in
the next glibc releases.

Thank you.