Util: Disable software HDR if the camera HAL actually supports it

Defaulting to disabling a functional camera capability and replacing
it with an inferior implementation is a bad idea

Change-Id: Ic8dd91721e0a803ba7226a6115c57ca223581819
HDR: only show slide animation after final shot

Also make sure to reset mBurstShotsDone to 0 after taking the
final shot for the HDR image.

Change-Id: I5cb4d5286402b577e097d57aa4cc9d850a317aef
Camera: add exposure and JPEG quality settings to video camera

- also set default JPEG quality to 100 (super)

Change-Id: I350484e93f88d229362dee663277a06f132fd4a3