OpenLayers.MouseListener.EditingListener.MovePathPoint

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

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

* Methods
  mouseOver -- none -- when a mouse over event occurs on a displayed geometry, all the concerned vertices are displayed
  mouseMove -- none -- if a vertex selection is set, all the references are moved with the mouse
  mouseDown -- none -- if a mouseDown event occurs on a displayed vertex, a reference to the vertex is added to the selection
  mouseUp -- none -- when a mouse up event occurs, the edited feature is updated into its layer
  _drawVertices -- none -- internal function to draw all the vertices of a geometry
  _eraseVertices -- none -- internal function to erase all the vertices of a geometry
  All other methods are inherited from {OpenLayers.MouseListener.EditingListener}