am 3f94669f: Merge "Revert "Update darwin clang prebuilts to be 64-bit.""

* commit '3f94669fe17a930ccd4c2fc9e233e3d696323cb6':
  Revert "Update darwin clang prebuilts to be 64-bit."
tree: 61cba5ca40c930222b4540b13429013d34ae7e0a
  1. bin/
  2. lib/
  3. update.sh