RC: Add back RC utils from jb-mr2

Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>
RC: Add Installer Persistence back

Depends on http://gerrit.aokp.co/#/c/14137/ and http://gerrit.aokp.co/#/c/14167/

Change-Id: I0681c67f53271ec412c440a7ab5c38bb98e728e9
Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>
Merge branch 'kitkat' of https://github.com/AOKP/packages_apps_ROMControl into kitkat