[RFA/JVMTI] SuspendThread and ResumeThread

[Tom Tromey]

Keith> Actually, I'd like to submit this alternative version for the two
Keith> JVMTI functions, which now do at least some validity checking.

Looks good.  One little nit...

Keith> Index: posix-threads.cc
Keith> -void
Keith> -_Jv_ThreadDebugSuspend (_Jv_Thread_t *data)
Keith> -{
Keith> -}

It seems to me that these should also be removed from win32-threads.cc.

Also there are declarations in include/*-threads.h, perhaps they
should be moved elsewhere.

Tom