Merge changes Icb8e6290,Iadde7b21,I743ab92c,Ie078fbc2,I2ab3cd46, ...

* changes:
  libsync: tests: redefine PollOnDestroyedTimeline()
  libsync: tests: remove WaitOnDestroyedTimeline test
  libsync: add support to new Sync API
  libsync: open new location of sw_sync file
  libsync: add new Sync kernel API
  libsync: move kernel headers for sync ioctls to sync.h