Bug 117149 Add additional datapoint markers
I would like to propose adding additional datapoint markers. Attached is a set of markers I would like supported.
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/series/LineSeriesAttributeComposite.java
* @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
	 */
	public void handleEvent( Event event )
	{
		if ( event.widget.equals( iscMarkerSize ) )
		{
			( (LineSeries) series ).getMarker( )
					.setSize( ( (Integer) event.data ).intValue( ) );
		}
		else if ( event.widget.equals( liacLine ) )
		{
			if ( event.type == LineAttributesComposite.VISIBILITY_CHANGED_EVENT )
			{
				( (LineSeries) series ).getLineAttributes( )
						.setVisible( ( (Boolean) event.data ).booleanValue( ) );
				enableLineSettings( ( (LineSeries) series ).getLineAttributes( )
						.isVisible( ) );
			}
			else if ( event.type == LineAttributesComposite.STYLE_CHANGED_EVENT )
			{
				( (LineSeries) series ).getLineAttributes( )
						.setStyle( (LineStyle) event.data );
			}
			else if ( event.type == LineAttributesComposite.WIDTH_CHANGED_EVENT )
			{
				( (LineSeries) series ).getLineAttributes( )
						.setThickness( ( (Integer) event.data ).intValue( ) );
			}
			else if ( event.type == LineAttributesComposite.COLOR_CHANGED_EVENT )
			{