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
private transient Combo cmbMarkerTypes = null;
	private transient IntegerSpinControl iscMarkerSize = null;
	private transient Group grpLine = null;
	private transient LineAttributesComposite liacLine = null;
	private transient Series series = null;
	private static ILogger logger = Logger.getLogger( "org.eclipse.birt.chart.ui.extension/swt.series" ); 
	/**
	 * @param parent
	 * @param style
	 */
	public LineSeriesAttributeComposite( Composite parent, int style,
			Series series )
	{
		super( parent, style );
		if ( !( series instanceof LineSeriesImpl ) )
		{
			try
			{
				throw new ChartException( ChartUIExtensionPlugin.ID,
						ChartException.VALIDATION,
						"LineSeriesAttributeComposite.Exception.IllegalArgument", new Object[]{series.getClass( ).getName( )}, Messages.getResourceBundle( ) ); 
			}
			catch ( ChartException e )
			{
				logger.log( e );
				e.printStackTrace( );
			}
		}
		this.series = series;
		init( );