Refactor. Make ConsoleBase a true base class. Create CommandConsole as a simple

console capable of processing commands. Create LocalConsole as a console
that uses cursor control and context help. Precursor to a distributed
console system for the new grid services. No functional change intended :)

OpenSim/Grid/InventoryServer/Main.cs

@@ -60,7 +60,7 @@ namespace OpenSim.Grid.InventoryServer
 
         public OpenInventory_Main()
         {
-            m_console = new ConsoleBase("Inventory");
+            m_console = new LocalConsole("Inventory");
             MainConsole.Instance = m_console;
         }