Bug 123736 Underline, linethrough, overline doesn't work for chart font.
Description: Underline, linethrough, overline doesn't work for chart font. Steps to teproduce: 1. Add a style, set its font. 2. Tick "underline", "linethrough" and "overline". 3. Preview. Font setting doesn't work.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/factory/Generator.java
ChartException.GENERATION,
					"exception.unsupported.chart.model", 
					new Object[]{
						cmRunTime
					},
					ResourceBundle.getBundle( Messages.ENGINE, rtc.getLocale( ) ) );
		}
		
		final LinkedHashMap lhmRenderers = new LinkedHashMap( );
		BaseRenderer[] brna = null;
		try
		{
			brna = BaseRenderer.instances( cmRunTime, rtc, oComputations );
			for ( int i = 0; i < brna.length; i++ )
			{
				lhmRenderers.put( brna[i].getSeries( ),
						new LegendItemRenderingHints( brna[i],
								BoundsImpl.create( 0, 0, 0, 0 ) ) );
			}
		}
		catch ( Exception ex )
		{
			ex.printStackTrace( );
			throw new ChartException( ChartEnginePlugin.ID,
					ChartException.GENERATION,
					ex );
		}
		
		Block bl = cmRunTime.getBlock( );
		final LayoutManager lm = new LayoutManager( bl );