code: function _fnCompatCols ( init )
  	{
  		_fnCompatMap( init, 'orderable',     'bSortable' );
  		_fnCompatMap( init, 'orderData',     'aDataSort' );
  		_fnCompatMap( init, 'orderSequence', 'asSorting' );
  		_fnCompatMap( init, 'orderDataType', 'sortDataType' );
  	}
docs: Provide backwards compatibility for column options. Note that the new options
  are mapped onto the old parameters, so this is an external interface change
  only.
  @param {object} init Object to map