Frameworks: Enhance face detection

Add support for facial processing features:
smile detection, gaze detection and blink detection

Change-Id: Ic186ff0658e755a8b5287cffa1dd58d9eafebc9a
Camera: Adds support for longshot configuration

- The Camera API is extended with one additional
  call for longshot mode configuration.

Change-Id: If3bcad003facae22ec2bd690480dc3db63f0b28a
Fix compilation for non QCOM hardware after 'Enhance face detection' commit

Change-Id: I337a7a2e8b124aac76f52abcc0edd8af9b0b0e29
Frameworks : Fix face detection

I337a7a2e8b124aac76f52abcc0edd8af9b0b0e29 introduced
the ifdef's at the wrong location. This patchset addresses it.

Change-Id: I6b19fb96076bdc62b2ca57d1ccaf97f0cb901d67
camera: Better fix for face detection score issue

 * Do this at the lower layer so that third-party apps don't have
   issus with the nonstandard score.

Change-Id: Ic012b092d2f47dbaab8cbfe2bd215b955800cc11