Bug 858578 - Update bundled libpng to version 1.5.15. r=joedrew
Bug 859158 - Removed unused ifdef DEBUG in imgRequest.cpp. r=joedrew
Bug 859158 - Remove unneeded ifdef DEBUG_joe. r=joedrew
Bug 860892 - IPC failure handling in CompositorChild and ShadowLayers. r=jmuizelaar
Bug 861139 - Fix the return of a floating point value from an ARM asm.js entry. r=mrosenberg