[patch] purge obseleted configurations, top level

[DJ Delorie]

> OK.  I sent this in on the advice that if I couldn't find any
> references to these being particularly supported as binutils-only
> targets, I could assume they weren't.  Now I have that information.

I didn't say there were people actively supporting them.  I said they
were supported by binutils.  By that, I meant that their configure
scripts have entries for those targets.  When all the projects have
purged themselves of these targets, then I'd feel safe removing them
from the toplevel files.

> Incidentally, these are now very unlucky little targets,

Yup.

> > > -   arm-*-riscix*)
> -- no ld.

The support files are still there, though.  It might use generic
support logic to find them.

> > > -   m68k-apollo-*)
> -- no ld, 'binutils', gprof, libgloss

It may use the generic m68k support for those.

> > > -   mips*-dec-bsd*)
> -- no gprof, libgloss
> > > -   mips*-*-bsd*)
> -- no gprof, libgloss

Not needed - bsd is a hosted system.

> > >     romp-*-*)
> -- no bfd, 'binutils', ld, gas, opcodes, or libgloss (!)
> > > +     # should be deleted after GCC 3.2 unless support is reenabled
> 
> Romp seems genuinely unsupported; am I right about this one?

Not quite entirely:

gcc/config.gcc: | romp-*-openbsd*  \
gcc/config.gcc:romp-*-openbsd*)
ld/configure.host:romp-*-*)
opcodes/configure:      bfd_romp_arch)          ;;
opcodes/configure.in:   bfd_romp_arch)          ;;
gcc/config/romp/
gdb/config/romp/