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
* 
	 * @see org.eclipse.birt.chart.ui.swt.interfaces.IChartType#getDefaultDimension()
	 */
	public String getDefaultDimension( )
	{
		return saDimensions[0];
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.ui.swt.interfaces.IChartType#supportsTransposition()
	 */
	public boolean supportsTransposition( )
	{
		return true;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.ui.swt.interfaces.IChartType#supportsTransposition(java.lang.String)
	 */
	public boolean supportsTransposition( String dimension )
	{
		if ( getDimensionFor( dimension ) == ChartDimension.THREE_DIMENSIONAL_LITERAL )
		{
			return false;
		}
		return supportsTransposition( );
	}
	private ChartDimension getDimensionFor( String sDimension )