Retire the MPW support from toplevel and binutils

[Andrew Cagney]

> I'm sure you already knew this, but you'll need to update the cvs modules for the repository at the same time you're doing this - these files are explicitly named in there:
> 
> src-support  -a src/.cvsignore src/COPYING src/COPYING.LIB src/COPYING.NEWLIB
>              src/COPYING.LIBGLOSS src/ChangeLog src/MAINTAINERS
>              src/Makefile.def src/Makefile.in src/Makefile.tpl src/README
>              src/README-maintainer-mode src/config src/config-ml.in
>              src/config.guess src/config.if src/config.sub src/configure
>              src/configure.in src/contrib src/etc src/gettext.m4 src/install-sh
>              src/libtool.m4 src/ltcf-c.sh src/ltcf-cxx.sh src/ltcf-gcj.sh
>              src/ltconfig src/ltmain.sh src/makefile.vms src/missing src/mkdep
>              src/mkinstalldirs src/move-if-change src/mpw-README
>              src/mpw-build.in src/mpw-config.in src/mpw-configure
>              src/mpw-install src/setup.com src/src-release src/symlink-tree
>              src/ylwrap

Er, the modules file should _not_ be updated.  You can always add, but 
never remove entries.

Andrew