adds supports for the new syntax notation of V.ref and V.val to refer to the reference projection of a value type V and its value projection. The old syntax of V? is withdrawn. This change also has class file implications where the descriptor/signature encodings will now start mentioning $ref in the class pool entries.
This ticket is to make the changes necessary for the jdk tests in valhalla to co-evolve with
I am including those tests that involve only mechanical and so "uninteresting changes" here. If a test meaningfully changes, it will be included in
This is to simplify the review process so that the changeset for
is not cluttered with all the mechanical changes.