[RFA] config/rs6000/xm-rs6000.h cleanup

[Joel Brobecker <brobecker at gnat dot com>]

Almost obvious, so I prefer to suggest this as an RFA, especially since
I can't test it.

2004-08-11  Joel Brobecker  <brobecker@gnat.com>

        * config/rs6000/xm-rs6000.h (HAVE_TERMIO): Remove define.
        (NULL): Remove redefine.
        (alloca): Remove pragma.
        (vfork): Remove define.
        (SIGWINCH_HANDLER): Likewise.
        (SIGWINCH_HANDLER_BODY):Likewise.

Ok to apply?

There is also the "#define USG" that I didn't remove for now, because
I am running short of time and couldn't remember how it was used. Maybe
this ought to go to.

And then the last piece that's in there is the fd_set hack. Might
be needed, but I would guess only for older versions of AIX. Maybe
the right thing to do is to drop support for old versions of AIX,
especially on rs6000 cpus, unless somebody has the machines where
we can do some testing...

What should I do?

Thanks,
-- 
Joel

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