Enforce class definition ordering rules in v37 Dex files.

These new checks also reject classes extending or
implementing themselves directly or transitively within
a single Dex file.

Bug: 28812524
Bug: 28797012
Bug: 28685551
Bug: 27682580

Change-Id: I51c43f8b4b6a7abaade63682411e61f21767f5d4