Merge branch 'stable-2.16' into stable-3.0

* stable-2.16:
  SingleUserGroupTest: Remove unnecessary groupBackend member

Change-Id: I6e091ea1d7381ddc176948aa3def7de4adc879db
tree: ea66478e905d6af22bbc6050a32b0e744009db96
  1. .gitignore
  2. .settings/
  3. BUILD
  4. LICENSE
  5. src/