Merge "Revert "Switch from clang 3.6 to new clang repository (with 3.8)."" am: a7918b4948
am: adb12a039a

* commit 'adb12a039ab34f1b9a33f933a249b0c86e389737':
  Revert "Switch from clang 3.6 to new clang repository (with 3.8)."