actually user the database_connect string for mysql.

This means you can run all the OpenSim grid services without
needing a mysql_connection.ini

OpenSim/Data/InventoryDataBase.cs

@@ -29,5 +29,6 @@ namespace OpenSim.Data
 {
     public abstract class InventoryDataBase
     {
+        public abstract void Initialise(string connect);
     }
 }