Fixed package bugs in new Entity and comment handling code, updated Makefile
Included new features about writing XML documents into dbThis includes writing data into db XML Catalog, document data into xml_documents,comments into xml_nodes, added nodeindex for the order of elements by given parent element.
changed package name to edu.ucsb.nceas.metacat.*
documentation updates
documentation additions
general cleanup and documentation
completed basic DBReader functionality. Can now read XML from DB using DBReader
adding recursive build for ReaderElement
created code to read XML doc from db source and emit it as an XML stream