Bug 1060088 - Don't ship unused addon providers in Fennec; r=Unfocused
Bug 1062372 - Lazily load browser.js modules; r=mfinkle
Bug 1062379 - Don't reduce Gecko thread priority for multicore devices; r=mfinkle
For multicore devices, the Gecko thread should be able to run on a separate core than the UI thread, so there's no reason to lower the Gecko thread priority in consideration for the UI thread. Patch also fixes some race conditions involving sGeckoThread in ThreadUtils.