Bug 910908 - Remove obsolete optimus blocking in d3d9. r=bas

This was added when we only had a d3d9 layer manager and needed
to interoperate between d2d and d3d9. We don't have that anymore.

--HG--
rename : browser/config/mozconfigs/win64/common-opt => browser/config/mozconfigs/win64/nightly
rename : mfbt/Maybe.h => mfbt/Util.h
rename : toolkit/components/social/FrameWorkerContent.js => toolkit/components/social/FrameWorker.jsm
rename : webapprt/content/mochitest-shared.js => webapprt/content/mochitest.js
rename : widget/gonk/HwcUtils.cpp => widget/gonk/HwcComposer2D.cpp
extra : rebase_source : 91711ea886a20d74b68dbaf4dd571deb10df606f
Bug 909494 - IonMonkey: Fix MMod range analysis for non-integer values. r=nbp