Major Description
XML API's in shared/lib is causing uPortal some problems.
With Pluto 1.2.0 requiring Java 1.5, I think we can update to Castor 1.1 which supports using the JVM's XML parser, and remove the XML libraries from shared/lib.
See http://castor.org/xml-faq.html#Is-it-true-that-the-use-of-Castor-XML-mandates-Xerces-as-XML-parser?