Bug 864494 - Hardcode the value of jsloader.reuseGlobal on b2g to work around some IPC preferences problem that we don't entirely understand. r+a=jlebar
Bug 868741 - Fix a null-pointer crash in ProcessPriorityManager. r=bent, a=leo+

This crash would occur if a ParticularProcessPriorityManager observed a
wake-lock change after being ShutDown().
Bug 861894 - Avoid apps to schedule new offline cache downloads while device free space is low. r=honzab, a=tef+
Bug 861894 - Avoid apps to schedule new offline cache downloads while device free space is low. Tests. r=honzab, a=tef+