Metacat

Beginning new method for building the xml_index table. This uses the
JDBC resultset directly rather than DBSaxNode, and recurses through the
records of the table. The new function 'buildIndex()' would be called, but
currently is not linked in to any code, so it shouldn't get in the way....

removed a bug which was pointed out by Bing and fixed by Jing.

Removed some unused code

Added new upload function which takes InputStream as input.

fixed some bugs in document update

Added method to metacat client for reading inline data - readInlineData()

Fixed a bug in upload function. For online data updates, access was not checked.

Fixed handling of various docid formats.

Code added to handle errors resulting from following urls:
http://metacat.nceas.ucsb.edu/knb/metacat?action2 - no action specified
http://metacat.nceas.ucsb.edu/knb/metacat?action=insert - no docid specified
http://metacat.nceas.ucsb.edu/knb/metacat?action=login - no username specified...

Added check for null condition so that proper error text is returned to user.