Bug 716647 - Part 4: Recompile on-stack baseline scripts when toggling debug mode. (r=jandem)
Bug 986767 - Fix adjusting stepModeCount when removing a debuggee global from inside the onStep handler.
Bug 716647 - Part 5: Relax the no on-stack scripts restriction for addDebuggee.
Bug 716647 - Part 6: Tests.
wip xpcom component for slow script debug button
Bug 994444 - Fix infinite loop when trying to find the next pc when bailing out to Baseline on a resume-at loopentry.