Bug 911233, part 1 - Minor cycle collector cleanups. r=smaug
Bug 911233, part 2 - Inline SelectPurple. r=smaug
Bug 911233, part 3 - Add more CheckThreadSafety calls to the cycle collector. r=khuey
Bug 913080 - Make GCGraphBuilder's hash table initialization infallible. r=smaug
Bug 910845 - Add a wrapper for mmap() in order to keep the high 17-bits of JS pointers cleared on IA64. r=billm
Bug 909768 - Replace idl::GeoPositionOptions with dom::PositionOptions. r=jdm