FileUtils: add method to get UUID of a volume

Change-Id: I41b76c5e01c82a2f8e67b33133a76947877a2814

Conflicts:
	core/java/android/os/FileUtils.java
	core/jni/android_os_FileUtils.cpp
Camera: Add support for QC camera features.

Added APIs and keys for all QC features. This
will enable application to get/set paramters.

Change-Id: I58a53c7b9133a3acddc34b268dac086c9562d533