Merge changes from topic 'binder_tests_aosp'

* changes:
  Add test to check buffer hdr not in user space
  Add test for death notification workqueue.
  Fix percentile calculations
  Refine the binder latency test
  Add options to specify payload size and use client/server pairs
  Add binder test for bug 30445380
  binder: tests: Check that cookie and binder high bits are zero
  binder: tests: Fix warnings