PATCH: Various threads fixes

[Tom Tromey]

>>>>> "Bryce" == Bryce McKinlay <bryce@albatross.co.nz> writes:

Bryce> I ran some of the threads regression tests out of kaffe on
Bryce> libgcj, and - lets say - things were broken pretty badly.

It would be cool if we could get these into Mauve.  That might be hard.

Bryce> This patch also includes my earlier patch to get rid of the
Bryce> explicit SIGINT handling.

Unfortunately I can't possibly look at this patch until next week.
I'm exceedingly busy right now.  If somebody else wants to take a stab
at it, I'm amenable.

T