CTS Audio Quality Verifier Integration

Integrated the audio quality verifier code to make it appear
in the CtsVerifier by making some minor changes:

- Put audioquality JNI code under separate directory below
  "jni" called "audioquality" and moved all other JNI to the
  "verifier" subdirectory.

- Made subdirectory "audioquality" for the assets

- Prefixed layouts, strings, and other resources with "aq_"

- Replaced VerifierApplication that extended android.app.Application
  with a singleton instance - this needs to be replaced with
  a content provider or some sort for persistance.

- Renamed "VerifierActivity" to "AudioQualityVerifierActivity"
  since the class name is used in the database for recording
  pass or fail.

- Added AudioTrack#getState check in BackgroundAudio

There will be more changes to add instructions and perhaps
provide tighter integration.

Change-Id: If049091c9f43a340fbd260003fac560b5e414009
68 files changed