Adds external interface example
Perform transform on MemberExpression's object in build.js
Fixes scrips-worker.js inclusions
Adds $EXTENSION for the extension builds
Initial external interface communication
Merge branch 'youtube' into external

Conflicts:
	src/flash/display/Loader.js
Merge remote-tracking branch 'mozilla/youtube' into external
Implements non-new XML/XMLList invocations
Fixes async FirefoxCom.request
Moves iterating by public properties into forEachPublicProperty
Fixes call in from the external interface
Adds callIn result output to the example
Prefs external interface
Merge pull request #236 from yurydelendik/external

ExternalInterface implementation