Revision 677689

* Added new DataObjectFactory to take care of MO:DCA DataObject creation/instantiation.
* Created a DataObjectCache which is now used to cache all resource objects such as images to a RandomAccessFile so all the memory isn't eaten by them during rendering.
* Added new GraphicsObjectPainter class invoked by DataObjectFactory on creation of GraphicsObject.
* Added Category and Type inner interfaces and handy copySF() to base AbstractAFPObject with more code reuse, simplifications/optimizations of writeStart() and writeEnd().
* SVG entry and isImage() isGraphic() convenience methods added to MO:DCA Registry.
* Updated AFPSVGHandler to use similar fox:conversion-mode foreign attribute mechanism for bitmap painting fallback used by PCLRenderer and PDFRenderer.