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/AreaChart.java
{
					currentChart.setSubType( sNewSubType );
					EList axes = ( (Axis) ( (ChartWithAxes) currentChart ).getAxes( )
							.get( 0 ) ).getAssociatedAxes( );
					for ( int i = 0; i < axes.size( ); i++ )
					{
						if ( sNewSubType.equalsIgnoreCase( PERCENTSTACKED_SUBTYPE_LITERAL ) )
						{
							( (Axis) axes.get( i ) ).setPercent( true );
						}
						else
						{
							( (Axis) axes.get( i ) ).setPercent( false );
						}
						EList seriesdefinitions = ( (Axis) axes.get( i ) ).getSeriesDefinitions( );
						for ( int j = 0; j < seriesdefinitions.size( ); j++ )
						{
							Series series = ( (SeriesDefinition) seriesdefinitions.get( j ) ).getDesignTimeSeries( );
							if ( ( sNewSubType.equalsIgnoreCase( STACKED_SUBTYPE_LITERAL ) || sNewSubType.equalsIgnoreCase( PERCENTSTACKED_SUBTYPE_LITERAL ) ) )
							{
								series.setStacked( true );
							}
							else
							{