Revolution is on the roll again! :)

Fixes: Undo, T-pose of others on login, modifiedBulletX works again, feet now stand on the ground instead of in the ground, adds checks to CombatModule. Adds: Redo, Land Undo, checks to agentUpdate (so one can not fall off of a region), more vehicle parts. Finishes almost all of LSL (1 function left, 2 events).

Direct flames and kudos to Revolution, please

Signed-off-by: Melanie <melanie@t-data.com>

OpenSim/Region/Framework/Interfaces/ITerrainModule.cs

@@ -62,5 +62,7 @@ namespace OpenSim.Region.Framework.Interfaces
         void SaveToStream(string filename, Stream stream);
 
         void InstallPlugin(string name, ITerrainEffect plug);
+
+        void UndoTerrain(ITerrainChannel channel);
     }
 }