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
*            The bounds associated with the chart being built.
	 * @param rtc
	 *            Encapsulates the runtime environment for the build process.
	 * 
	 * @return An instance of a generated chart state that encapsulates built
	 *         chart information that may be subsequently rendered.
	 * 
	 * @throws GenerationException
	 * 
	 * @deprecated
	 */
	public final GeneratedChartState build( IDisplayServer ids,
			Chart cmDesignTime, Scriptable scParent, Bounds bo,
			RunTimeContext rtc ) throws ChartException
	{
		return build( ids, cmDesignTime, scParent, bo, rtc, null );
	}
	/**
	 * Builds and computes preferred sizes of various chart components offscreen
	 * using the provided display server.
	 * 
	 * @param ids
	 *            A display server using which the chart may be built.
	 * @param cmDesignTime
	 *            The design time chart model (bound to a dataset).
	 * @param scParent
	 *            A parent script handler that may be attached to the existing
	 *            chart model script handler.
	 * @param bo
	 *            The bounds associated with the chart being built.