Bug 208373 Auto resize Chart to have a single axis without blank
When Chart is within Cross tab, chart axis image should have a single axis only, but there may be much blank in other area. Chart engine should auto resize the image to have the axis with fit size. Meanwhile, report engine should not set size for chart image.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/AxesRenderer.java
* Returns if current chart is transposed.
	 */
	public final boolean isTransposed( )
	{
		return ( (ChartWithAxes) getModel( ) ).isTransposed( );
	}
	/**
	 * Returns previous visible series index by given index.
	 * 
	 * @param currentIndex
	 * @return
	 */
	protected int getPrevVisibleSiblingSeriesIndex( int currentIndex )
	{
		SeriesDefinition sd = null;
		Series se = getSeries( );
		if ( se.eContainer( ) instanceof SeriesDefinition )
		{
			sd = (SeriesDefinition) se.eContainer( );
		}
		if ( sd != null )
		{
			int count = 0;
			int idx = sd.getRunTimeSeries( ).indexOf( se );
			if ( idx > 0 )
			{
				for ( int i = idx - 1; i >= 0; i-- )
				{
					count++;
					if ( ( (Series) sd.getRunTimeSeries( ).get( i ) ).isVisible( ) )