Merge tag android-5.1.0_r1 into AOSP_5.1_MERGE

Change-Id: I5f7a18f535eb0f027e87ab78b532cbf97cc7427f
tree: e93304b305f1cc2d67de7411e8b9d1cab7ca6d90
  1. src/
  2. test/
  3. Android.mk
  4. LICENSE
  5. MODULE_LICENSE_BSD
  6. NOTICE
  7. README