message: Freeze kythe version at last known-good commit.
  Unbreak build for now, there may be a better fix.
  fixes
diff: @@ -142,7 +142,10 @@ http_archive(
  # TODO(ikr): Replace with a Kythe release once it moves beyond 0.48
  git_repository(
  name = "io_kythe",
  - branch = "master",
  + # branch = "master",
  + # commit = "bee43a5908ce99cb9cf5a2cd42dc2da2972707f8", # broke issue #625
  + # the last working commit on "master" between 0.48 and 0.49:
  + commit = "410f69c5bcb69fabcb78a5200b7631a1bffabd31",
  remote = "https://github.com/kythe/kythe",
  )
  