[RFA] Fix JVMTI interpreted tests

[Tom Tromey]

>>>>> "Keith" == Keith Seitz <keiths@redhat.com> writes:

Keith> This patch addresses problems with the interpreted JVMTI testsuite
Keith> that have crept in over the past few months. The most notable problems
Keith> show up in the getstacktrace test, which times out during the test
Keith> run.

Keith> There are a bunch of bugs that caused this, and I believe this
Keith> resolves them all.

Thanks Keith, this is ok.

Tom