Add a new buildslave 'gribozavr5'


git-svn-id: https://llvm.org/svn/llvm-project/zorg/trunk@214910 91177308-0d34-0410-b5e6-96231b3b80d8
More libc++ builder fixes.


git-svn-id: https://llvm.org/svn/llvm-project/zorg/trunk@214913 91177308-0d34-0410-b5e6-96231b3b80d8