Changed environment for builders 
clang-x86_64-darwin11-cross-mingw32,
clang-x86_64-darwin11-self-mingw32,
clang-x86_64-darwin11-cross-arm.

git-svn-id: https://llvm.org/svn/llvm-project/zorg/trunk@200728 91177308-0d34-0410-b5e6-96231b3b80d8