[RFA/JVMTI] Implement GetErrorName

[Tom Tromey]

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

Keith> It looks like we probably only want to use the
Keith> unchecked variety and return JVMTI_ERROR_OUT_OF_MEMORY when the malloc
Keith> fails. I don't see anyplace where we wouldn't do this. Do you?

I agree, that's what we should do.
Throwing exceptions from the jvmti code seems really wrong :)

Tom