am a90f9d2c: Merge "Warn when new modules are found that use user tags - DO NOT MERGE" into gingerbread

Merge commit 'a90f9d2c299d7833b37f8a0e244a2893054d9ea5' into gingerbread-plus-aosp

* commit 'a90f9d2c299d7833b37f8a0e244a2893054d9ea5':
  Warn when new modules are found that use user tags - DO NOT MERGE