ART: Add GetClassVersionNumbers.

Add support for GetClassVersionNumbers. Return the dex file version
as major, zero as minor. Add test.

Bug: 31684578
Test: m test-art-host-run-test-912-classes
Change-Id: Ib5082cd58b27a9183d8f19d42d4d8af46a6bb9c9
6 files changed