Merge "DO NOT MERGE Rename Support Library to 24.0.0-alpha1 for Developer Preview Only BUG=27338582" into nyc-dev am: 5f5099d053
am: 528d5956cc  -s ours

* commit '528d5956ccf9c24aedb6a76a74418eca51b8574b':
  DO NOT MERGE Rename Support Library to 24.0.0-alpha1 for Developer Preview Only BUG=27338582