Update clang-tools to ab/5392938 am: dbcf41219d
am: 18cf61cb1c

Change-Id: I7d95998a355fadba2eb2e5d5fcba0c9d34d20a73
tree: 4803b1f101c98bb6ffc31b40ff59c88e38ffb2fe
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml