BoardConfig: build smaller system partition
Clean up tree for release branch

Change-Id: I82e4967eda33b5ab37af505619ffdd1733796e69
Deodex flag and SmallSystemStub

Summary: Change-Id: Ia64b9c5d3b159a4d6eda9fce8ad47debeaf75855

Test Plan: Xoom WIP

Reviewers: synergy, randall.rushing

Differential Revision: http://review.codefirex.com/D258

Change-Id: I66f8bee6ccb02f0472d6bcbc5e629a1a99f088bd
Remove unused makefile that was breaking inheritance

Change-Id: I31f8e74448fb9f84e64e8461a3f8ccf123c8a92a