[Yhc] End-of-life of my linux-ppc buildbot

[Neil Mitchell]

Hi Isaac,

> Well, my linux-ppc buildbot is gone now. Probably never will run again.

We'll miss it :-)

It caught a bug that on Linux PPC char is unsigned by default,
something we'd have never found without it.

As a related note, if anyone has some alternative hardware for a Yhc
buildbot, let us know. Something SPARC/Sun related would be nice, if
its lying around.

Thanks

Neil