MediaProvider: get UUID of removable volumes for non-FAT filesystems

Change-Id: I0a66d6c169f3da8fb69af09e543d56df2d84e347
Merge "MediaProvider: get UUID of removable volumes for non-FAT filesystems" into cm-10.1
Merge branch 'cm-10.1' of github.com:CyanogenMod/android_packages_providers_MediaProvider into jb42