Merge changes Ife723733,I68acfb53,Id216c35d,Id0569831,Iadac88f8, ...

* changes:
  Add system/media/audio/include to commonGlobalIncludes
  Add -Werror=date-time to target builds
  DeviceUsesClang should default to true
  clang now supports -fdebug-prefix-map=.
  Turn on ninja errors for duplicate rules
  Update to use the latest clang-2629532