Merge changes Ib1c28c94,Id3485a2a,If5ad5acf,Idc9054bd,Ie4e7e25d

* changes:
  libbinder_ndk: eradicate global lock
  libbinder: add IBinder::withLock
  libbinder_ndk: remove global lock on proxy delete
  libbinder: attachObject APIs work with threads
  rename binderParcelTest binderUnitTest