Deprecate android.hardware.Camera

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Replaced by android.hardware.camera2

- Also deprecate MediaRecorder#setCamera
- Also deprecate all Camera inner classes
- Update reference documentation in various classes to point to camera2
- Add note to camera API guide that it uses the old API
  (until a new guide is available)
- Remove old hidden raw sensor format; superceded by RAW_SENSOR.

Change-Id: I3d839765fc9b9aae906751ee32d6956ef40451ce