Themes: Check CRC of APK MANIFEST.MF at install

Change-Id: I6ccfcd2b04107b85fe14cb678aad63443284353a
Themes: Avoid compiling icon packs every boot

Change-Id: I51c7effdd4592a302f457822a05cbebee6cde06b
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0