The previewCallback receives an Image object, consistent with the Camera2 API.
Packed/interleaved Camera1 image formats are stored on a single Plane.  The preferred
format can be specified.  If available that format will be used, and if not, will fall
back to whatever the default format is.

This reverts commit ca68dc3.

The preview callback receives an Image object, consistent with the Camera2 API.
Packed/interleaved Camera1 image formats are stored on a single Plane in the Image.
The preferred format for the preview can be specified. If available, that format will
be used and if not, will fallback to whatever the default format is.

-fix error where callback sill called after releasing camera
-downloaded dependency jars and removed references to mavencentral and jcenter

Conflicts:
	library/src/main/api14/com/google/android/cameraview/Camera1.java