Bug 950800 - Honor Composer2D toggling on the fly. r=nrc, a=1.3+

Now you can toggle the hardware composer on/off at any point without restarting B2G.
Bug 952006 - [RTSP][Video] System crash while RTSP reconnecting. r=sworkman, a=1.3+
Bug 956322 - Trying to download an MMS fails with 'Missing SIM card'. r=vicamo, a=1.3+
Bug 952371 - Part 1: idl changes - [DSDS] mozMobileconnection.lastKnownNetwork and .lastKnownHomeNetwork aren't working. r=hsinyi, a=1.3+
Bug 952371 - Part 2: dom changes - [DSDS] mozMobileconnection.lastKnownNetwork and .lastKnownHomeNetwork aren't working. r=smaug, a=1.3+
Bug 952371 - Part 3: ril implementation - [DSDS] mozMobileconnection.lastKnownNetwork and .lastKnownHomeNetwork aren't working. r=hsinyi, a=1.3+
Bug 952371 - Part 4: tests - [DSDS] mozMobileconnection.lastKnownNetwork and .lastKnownHomeNetwork aren't working. r=hsinyi, a=1.3+