[vector] Test to check method overriding

[Paul Sandoz]

Hi,

I just pushed a test that reports method overriding (or not) on methods of primitive vector or species classes. This will make it easier to make concrete methods on such classes abstract (just one default implementation) and detect operations that are not intrinsified (since the concrete class does not override).

http://hg.openjdk.java.net/panama/dev/rev/7b455dda2694 <http://hg.openjdk.java.net/panama/dev/rev/7b455dda2694>

I have not enabled assertions for now as it's likely too noisy with some false positives, but i think we can get to a point later on where we can do so.

Given the information output from this test i will, in a subsequent changeset, make abstract appropriate concrete methods on the primitive vector and species classes.

Thanks,
Paul.