Refactor away actions.py (bug 923212 item 3)
Convert globals to JSGlobal
Remove JSWrapper object
Add acorn parse option
Remove fs churn in spidermonkey (cuts test time in half)
Fixes for tracebacks
Minor refactoring, fixes for emscripted apps
jsmain improvements
Merge pull request #14 from mozilla/lean

Rewrite JS engine for speed and size (bug 923212)