Reverting r187736. It broke some public bots:

http://lab.llvm.org:8011/builders/clang-native-arm-cortex-a9/builds/10248
http://bb.pgr.jp/builders/cmake-clang-i686-mingw32/builds/3327



git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@187746 91177308-0d34-0410-b5e6-96231b3b80d8