Add XMLRPC() routine to demonstrate how to use the xmlrpc backend from
the webserver. This is not being used anyplace, except to test that it does indeed work. At some point we may want to change how we talk to the backend, going through the xmlrpc server instead of direct to scripts. The reason for doing this would be to eventually split the webserver off from the DB node, but that will take a lot more work (basically have to xmlrpc the entire backend, and at present the web interface uses a lot of scripts)! Note that mysql 4.0 has builtin support for ssl based connections. We could use that for access to the DB if/when we want to split off the web server.