Re-added a CLI "create user" command to the userserver, only currently works if using DB4o as the database provider.
Added Xml config files to both the UserServer and Gridserver (UserServerConfig.xml and GridServerConfig.xml), so that the database provider can be set in it. (both currently default to DB4o , so maybe Adam will want to change it back to defaulting to MySQL)
Also the build order for the two solutions should be to compile the OpenSim Solution first and then the GridServices one, as the common projects are referenced by DLL in the Gridservices.