Add a setting for Shutter Speed

Change-Id: Ieebe50a4be04e7fea9301da63c008e36f4ec0dbd
Util: remove redundant check for ShutterSpeed

Change-Id: I1bd8c356137225d9a4c1414ef6a07a60f7200c13
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android_packages_apps_Camera into jb-mv