Bug 134671 Legend title is displayed incorrectly.
Legend title is displayed incorrectly. Steps: 1.Import the attached report design file 2.Preview Actual Results: 1.Legend title is "Company", but displayed as "=Company" Expected Results: 1.Legend title is displayed correctly.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/BaseRenderer.java
protected void validateDataSetCount( ISeriesRenderingHints isrh )
			throws ChartException
	{
		if ( ( isrh.getDataSetStructure( ) & ISeriesRenderingHints.BASE_ORTHOGONAL_OUT_OF_SYNC ) == ISeriesRenderingHints.BASE_ORTHOGONAL_OUT_OF_SYNC )
		{
			throw new ChartException( ChartEnginePlugin.ID,
					ChartException.VALIDATION,
					"exception.base.orthogonal.inconsistent.count", 
					new Object[]{
							new Integer( isrh.getBaseDataSet( ).size( ) ),
							new Integer( isrh.getOrthogonalDataSet( ).size( ) )
					},
					ResourceBundle.getBundle( Messages.ENGINE, rtc.getLocale( ) ) );
		}
	}
	/**
	 * Filters the Null or invalid entry(contains NaN value) from the list. Each
	 * entry should be a double[2] or double[3] array object.
	 * 
	 * @param ll
	 * @return
	 */
	protected static List filterNull( List ll )
	{
		ArrayList al = new ArrayList( );
		for ( Iterator itr = ll.iterator( ); itr.hasNext( ); )
		{
			double[] obj = (double[]) itr.next( );
			if ( obj == null || Double.isNaN( obj[0] ) || Double.isNaN( obj[1] ) )
			{