Initial check-in of the sizable refactoring made

[Jihoon Kim]

The initial check-in of the sizable refactoring to perform the
creation of SWF and etcetera through MXML_BASIC RenderKit has been
made. Of course there exists many tasks still need to be completed,
noted with TODO + HACK comments, with some being :
(1) MXMLResponseWriterImpl extends from HtmlResponseWriterImpl for the
base implementation with addition of needed methods for JSF Flex
project, but in the future the hierarchy should be removed with
MXMLResponseWriterImpl implementing the ResponseWriter methods.
(2) MXMLResponseStateManager extends from HtmlResponseStateManager and
once again it should simply implement the abstract methods.
(3) MXMLRenderKitImplWrapper, which is the renderKit for "MXML_BASIC",
allows other RenderKits [i.e. "HTML_BASIC"] to be used by storing them
within List, but the renderKit factory must be of
MXMLRenderKitFactoryImpl. Of course there exists a TODO to implement
it better in the future.

So there exists many TODOs, but hopefully will be resolved in the
later weeks.

Thanks!