OpenLayers.MouseListener.EditingListener.AddPathPoint

  This mouseListener allows user to add points to the path of a geometry in a vector layer feature

* Constructor
  OpenLayers.MouseListener.EditingListener.AddPathPoint() -- Creates a new control. No options available.

* Methods
  mouseDown -- none -- place a new point on the layer
  mouseUp -- none -- when mouse is up add a new feature to the vector layer
  mouseMove -- none -- replace the new point on the layer
  keyDown -- none -- on RETURN key event, the geometry is finalized and on ESC key event, the geometry is cancelled
  _finalizeGeometry -- none -- internal method to add a new feature to the vector layer
  All other methods are inherited from {OpenLayers.MouseListener.EditingListener}