Merge "Drop CLANG and CLANG_CXX in the environment"
am: 27a55cd3c7

* commit '27a55cd3c703c190f933630e503d963ef7478183':
  Drop CLANG and CLANG_CXX in the environment

Change-Id: I3850b1783fb47cda05f1a7799ff8ceddb589e033