Gallery2: make panoramic focus mode configurable

 - This allows for device maintainers to switch between
   INFINITY and CONTINUOUS_VIDEO focus modes.  Some devices
   do not support INFINITY so the image and preview are both
   out of focus.

Change-Id: I81a69c7e9ce55037184ee7edd755f8c88507f781
Camera: revert CodeAurora's panorama angle handling

I'm not sure what the code is trying to fix, but break landscape
devices' panorama display

Change-Id: Ifa922b043f578353b778065e2123005a57185dfd