Reimport Camera features and fixes from CM6

Camera: Add framework support for Brightness, ISO and Lens Shading

Change-Id: I0021ab00537e326f367bedc4c99e04418196f09a

Camera: Add framework support for Autoexposure.

Change-Id: Ia986763be9f5cade738b622ba7707709bafd00b9

Camera: Handle exception that got thrown from camera setparameter

Catch exception thrown by the setParameter, as not all the parameters
are supported for all the sensor types.

Camera: Adding Sharpness, Contrast and Saturation features

Enabling Sharpness, Contrast and Saturation features
CRs-Fixed: 215214

Change-Id: Iadb53a797da03e805656c947a288f80c012b2d26

Camera: fix some parameter names

camera: Disable zoom if max-zoom is zero.

camera: Add more options

Change-Id: I28d4311cbd4d693586bb0b4c915ac7a22e216840

camera: Avoid NPE when getting undefined parameters

camera: Use int values instead of floats where applicable

Settings for brightness/contrast/saturation/sharpness are integers, not
floats. Update API to reflect this.