Bug 848199 - Rename the post barrier verifier nursery; r=billm

This allows us to use the post barrier verifier in parallel with generational
GC. It also makes the state tracking during verification much simpler.

--HG--
extra : rebase_source : d4e1f8486b46178ccfc90df5f2ec983a5b7d10c1
Bug 849536 - Make GetGCThingTraceKind work for Nursery things; r=billm

--HG--
extra : rebase_source : f13dffb79a041292b3a2b283927d4ca8bdda2dcf
Bug 841065 - Do not call pre-barrier on finalized objects when finalizing Map and SetObjects; r=billm

--HG--
extra : rebase_source : db2bbca3687ec396454645a8b60455356a4de453
Bug 849916 - Part 1: Make it possible to send ThreeDPoint objects as commands to the MSG thread; r=padenot
Bug 849916 - Part 2: Add helper functions for sending different argument types to the AudioNodeStream; r=padenot
Bug 849916 - Part 3: Create an engine for PannerNodes and make sure that we deliver the panner and listener parameters to it; r=padenot