Bug 810631 - Update libffi to version 3.1. r=jorendorff, r=glandium
Bug 1008412 - Account for low-precision resolution in the texture size check. r=tn
Bug 1008943 - Lazy imports in mozfile for performance reasons. r=ahal
Bug 1009289 - Fix printf type mixup in nsGlobalWindow CC logging. r=mccr8

mWindowID is uint64_t; PR_snprintf's interpretation of %ld is int32_t.
Currently this results in a crash on ARM, and probably fails to print
the window URI on 32-bit x86.  Additionally, on ARM, this was probably
printing garbage instead of the window ID since it was added in 2012.