Made SceneObjectGroup.GetChildPrim() public, for now so that script engine can get ref to the SceneObjectPart/ IScriptHost.

OpenSim/Region/Examples/SimpleApp/MyNpcCharacter.cs

@@ -78,6 +78,7 @@ namespace SimpleApp
         public event RequestXfer OnRequestXfer;
         public event ConfirmXfer OnConfirmXfer;
         public event RezScript OnRezScript;
+        public event UpdateTaskInventory OnUpdateTaskInventory;
 
         public event UUIDNameRequest OnNameFromUUIDRequest;