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/ScatterChart.java
/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.ui.swt.interfaces.IChartType#getChartSubtypes(java.lang.String)
	 */
	public Collection getChartSubtypes( String sDimension,
			Orientation orientation )
	{
		Vector vSubTypes = new Vector( );
		if ( sDimension.equals( TWO_DIMENSION_TYPE )
				|| sDimension.equals( ChartDimension.TWO_DIMENSIONAL_LITERAL.getName( ) ) )
		{
			if ( orientation.equals( Orientation.VERTICAL_LITERAL ) )
			{
				img2D = UIHelper.getImage( "icons/wizban/scatterchartimage.gif" ); 
			}
			else
			{
				img2D = UIHelper.getImage( "icons/wizban/horizontalscatterchartimage.gif" ); 
			}
			vSubTypes.add( new DefaultChartSubTypeImpl( STANDARD_SUBTYPE_LITERAL,
					img2D,
					sStandardDescription,
					Messages.getString( "ScatterChart.SubType.Standard" ) ) );
		}
		return vSubTypes;
	}
	/*
	 * (non-Javadoc)
	 *