* Establish InventoryArchiveSaved event for unit tests

* This is done on the inventory archiver module directly rather than Scene.EventManager - the module seems the more appropriate location

OpenSim/Framework/InventoryItemBase.cs

@@ -65,7 +65,7 @@ namespace OpenSim.Framework
         /// <summary>
         /// The description of the inventory item (must be less than 64 characters)
         /// </summary>
-        private string _description;
+        private string _description = string.Empty;
 
         /// <summary>
         ///

OpenSim/Framework/InventoryNodeBase.cs

@@ -42,7 +42,7 @@ namespace OpenSim.Framework
             get { return m_name; }
             set { m_name = value; }
         } 
-        private string m_name;
+        private string m_name = string.Empty;
         
         /// <summary>
         /// A UUID containing the ID for the inventory node itself