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.engine/src/org/eclipse/birt/chart/model/type/impl/AreaSeriesImpl.java
* 
	 * @return
	 */
	public static final Series create( )
	{
		final AreaSeries as = TypeFactory.eINSTANCE.createAreaSeries( );
		( (AreaSeriesImpl) as ).initialize( );
		return as;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.model.component.impl.SeriesImpl#initialize()
	 */
	protected void initialize( )
	{
		super.initialize( );
		getMarker( ).setVisible( false );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.model.component.Series#getDisplayName()
	 */
	public String getDisplayName( )
	{
		return Messages.getString( "AreaSeriesImpl.displayName" ); 	
	}
}