Update clang-tools to ab/6114689 am: bedbf4f21e am: 9b6c375fff

Change-Id: Ifaeeeca302749841733dfb11d17dc7080b912906
tree: f3f4b41ef0da0229c0c0ee77dec593c1238096d0
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml