Patch: FYI: Fix PR 18278

[Tom Tromey]

>>>>> "Tom" == Tom Tromey <tromey@redhat.com> writes:

Tom> I'm checking this in on the trunk and the 4.1 branch.
Tom> This fixes PR 18278.  Now we unwrap the return value of a JNI method
Tom> if the method returns an object.  This lets us correctly handle user
Tom> functions which return JNI weak references.  We hit this while running
Tom> a java-gnome application.

Andrew pointed out that we wanted this on the 4.0.x branch as well, so
I'm checking it in there.

Tom