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
IStyleProcessor externalProcessor )
	{
		Stack token = new Stack( );
		token.push( StyledComponent.CHART_ALL_LITERAL );
		prepareComponent( model, token, model, externalProcessor );
		token.clear( );
	}
	private void prepareComponent( Chart model, Stack token, Object component,
			IStyleProcessor externalProcessor )
	{
		
		if ( component instanceof EObject )
		{
			StyledComponent currentToken = getStyledComponent( (EObject) component );
			boolean pushed = false;
			if ( currentToken != null )
			{
				token.push( currentToken );
				pushed = true;
			}
			applyStyles( model,
					(StyledComponent) token.peek( ),
					(EObject) component,
					externalProcessor );
			
			for ( Iterator itr = ( (EObject) component ).eContents( )
					.iterator( ); itr.hasNext( ); )
			{
				prepareComponent( model, token, itr.next( ), externalProcessor );
			}