Switch to Mms-caf

Change-Id: Ic3d143c4304f17a2aea3ce43b19214641ade13ad
Enable FFMPEG and Stagefright plugins

Change-Id: Ia41715481d70040f9aa53c2a1cd080758ef4e96f
Merge remote-tracking branch 'cyanogen/cm-12.0' into cm-12.0