libgcj/117: _Jv_PthreadCheckMonitor test is not portable.

[Tom Tromey]

Bryce> I personally think its going to be rather difficult/messy to
Bryce> implement completly working java threads functionality
Bryce> (including things like interrupt()) for the various different
Bryce> pthread implementations in the same code.

I agree something better is needed.  I already have a hard time
keeping track of all the cases, and I wrote the code.  I don't have an
opinion on what exactly should be done though.

T