Metacat

New versions of the Metacat client API that allow access to the sessionId
so that a session can be reused over several different instances.

Fixed the sessionId handling code to now properly return the sessionId
in the login response message. Updated junit tests to test this issue.

Modified metacat to now provide the session identifier in the response
xml message when a login is called. This has not been fully tested.
I removed the HttpMessage class from metacat in favor of using the version
of that class that is found in the utilities module. This may cause some...

Fixed a bug for importing package

Fixed the bug that if path query without xml declaration will cause a non well-formed result doc.

A sample application program to call metacat string service.

Fixed some bugs in this file.

Implementation for the interface.

Add a new client interface with string type for web service.

in toxml method, add new code to handle dtd.