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 data row expression evaluator implementation
	 * @param chart
	 *            The chart model
	 * @param rtc
	 *            The runtime context
	 * @throws ChartException
	 * 
	 * @since 2.0
	 */
	public void bindData( IDataRowExpressionEvaluator expressionEvaluator,
			Chart chart, RunTimeContext rtc ) throws ChartException
	{
		bindData( expressionEvaluator, null, chart, rtc );
	}
	/**
	 * Binds data to the chart model using a row expression evaluator. The
	 * evaluator provides the ability to evaluate the expressions set in the
	 * chart on a row context.If the given IActionEvaluator is not null, then it
	 * will also search available expressions within the action and bind it as
	 * the user dataSets.
	 * 
	 * @param expressionEvaluator
	 *            The data row expression evaluator implementation
	 * @param iae
	 *            An IActionEvaluator instance.
	 * @param chart
	 *            The chart model
	 * @param rtc
	 *            The runtime context
	 * @throws ChartException