Bug 919638 - Part 1: Implement a work stealing thread pool for PJS. Original patch by Daniele Bonetta. (r=shu,nmatsakis)
Bug 919638 - Part 2: Change warmup semantics to be sequential in slices, low to high. (r=nmatsakis)
Bug 951542 - PJS: Fix race between interrupt check and main thread finishing. (r=nmatsakis)
Bug 958349 - Decompile {get,call}intrinsic opcodes in ExpressionDecompiler. (r=till)