am f870327d: am bc45fcbb: am 205d1c34: cherrypicking tools and adt r12 relnotes from hc-mr1 Change-Id: I0ea492417581c062f6433e23345fe3fe398709c0

* commit 'f870327d5dc8a914d0fc55f454b6378f3e504d79':
  cherrypicking tools and adt r12 relnotes from hc-mr1 Change-Id: I0ea492417581c062f6433e23345fe3fe398709c0