message: Update swift-cmake build script patcher to match llvm r314366
  Assumes git patch files instead of svn.
diff: @@ -49,7 +49,7 @@ def apply_patches(repo):
  f for f in files if fnmatch.fnmatch(
  f, repo + '.*.diff')]
  for p in patches:
  - subprocess.call(["patch", '-p0', '-i',
  + subprocess.call(["patch", '-p1', '-i',
  os.path.join(lldb_source_path(), 'scripts', p)],
  cwd=repo)
  