* Added CNavArea.Remove * Added CNavArea.SetCorner( int corner, Vector v ) * Added CNavLadder.Remove * Added CNavArea.ConnectTo( CNavArea/CNavLadder ) * Added CNavArea.Disconnect( CNavArea/CNavLadder ) * Added CNavArea.PlaceOnGround( int corner ) * Added navmesh.CreateNavArea( Vector corner, Vector opposite_corner )