Merge "Switch from clang 3.6 to new clang repository (with 3.8)." am: 106eb619e2 am: 3f83ed0181
am: ea4e438158

* commit 'ea4e438158b35f897c4a24caced15a65e4ca7308':
  Switch from clang 3.6 to new clang repository (with 3.8).