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/type/LineChart.java
zAxisAncillary.setPrimaryAxis( true );
			zAxisAncillary.setLabelPosition( Position.BELOW_LITERAL );
			zAxisAncillary.setOrientation( Orientation.HORIZONTAL_LITERAL );
			zAxisAncillary.getOrigin( ).setType( IntersectionType.MIN_LITERAL );
			zAxisAncillary.getOrigin( )
					.setValue( NumberDataElementImpl.create( 0 ) );
			zAxisAncillary.getTitle( ).setVisible( false );
			zAxisAncillary.setType( AxisType.TEXT_LITERAL );
			newChart.getPrimaryBaseAxes( )[0].getAncillaryAxes( )
					.add( zAxisAncillary );
			newChart.getPrimaryOrthogonalAxis( newChart.getPrimaryBaseAxes( )[0] )
					.getTitle( )
					.getCaption( )
					.getFont( )
					.setRotation( 0 );
			SeriesDefinition sdZ = SeriesDefinitionImpl.create( );
			sdZ.getSeriesPalette( ).update( 0 );
			sdZ.getSeries( ).add( SeriesImpl.create( ) );
			zAxisAncillary.getSeriesDefinitions( ).add( sdZ );
		}
		addSampleData( newChart );
		return newChart;
	}
	private void addSampleData( Chart newChart )
	{
		SampleData sd = DataFactory.eINSTANCE.createSampleData( );
		sd.getBaseSampleData( ).clear( );
		sd.getOrthogonalSampleData( ).clear( );
		
		BaseSampleData sdBase = DataFactory.eINSTANCE.createBaseSampleData( );