Patch by Mikael Lyngvig!
Added new builder lld-powerpc-linux-debian and slave for it.
Added env to LLDBuildFactory:
                   'C'    : "clang",
                   'CXX'  : "clang++


git-svn-id: https://llvm.org/svn/llvm-project/zorg/trunk@196813 91177308-0d34-0410-b5e6-96231b3b80d8