change RC_BUILDIT to RC_XBS for detecting Apple build environment

llvm-svn: 130970
1 file changed
tree: 66d957d809223eae75e76ad9d736b62bb16f2776
  1. clang/
  2. compiler-rt/
  3. debuginfo-tests/
  4. libcxx/
  5. libcxxabi/
  6. lldb/
  7. llvm/
  8. polly/