Macho-embedded: rename compiler-rt support from Darwin-embedded

There's nothing Darwin-based in the files or target now, so the previous name
is now misleading.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199733 91177308-0d34-0410-b5e6-96231b3b80d8
Macho-embedded: fix tests after last rename

Very sorry, I managed to completely forget "make check".


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199739 91177308-0d34-0410-b5e6-96231b3b80d8
clang-format: Enable formatting for .proto and .protodevel files.

Support for protocol buffer files seems complete enough.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199750 91177308-0d34-0410-b5e6-96231b3b80d8