Adds external interface example
Perform transform on MemberExpression's object in build.js
Fixes scrips-worker.js inclusions
Adds $EXTENSION for the extension builds
Merge pull request #232 from tschneidereit/youtube

Don't strip out asserts when compiling extension in $DEBUG mode
E4X descendants, toXMLString, and deepCopy, beginnings
Merge pull request #233 from artcompiler/youtube-e4x

E4X descendants, toXMLString, and deepCopy, beginnings
Initial external interface communication
Adjusting .gitignore for avm2 regression tests
Merge branch 'master' into youtube
Merge branch 'youtube' into external

Conflicts:
	src/flash/display/Loader.js
Add stub for JSON; cleanup xml.js
Merge pull request #234 from artcompiler/youtube-json

Add stub for JSON; cleanup xml.js
implement JSON
Merge pull request #235 from artcompiler/youtube-json

Implement JSON
Merge remote-tracking branch 'mozilla/youtube' into external
Implements non-new XML/XMLList invocations
Implements non-new XML/XMLList invocations
Merge branch 'youtube' of github.com:mozilla/shumway into youtube
Add a better TextField.textHeight stub