Update clang-tools to ab/5430938 am: 4ac13bb0a7 am: 6ad4e0732f
am: 71f025b31a

Change-Id: Iffa8c6210e3817d70d721274b6f82f55909e7c68
tree: 442cfbd868f7b0cdab93995d37493c7a57f82db8
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml