Bug 207268 Add visibility option for plot within axes
For chart with axes, we should make plot within axes invisible. Meantime, other plots, such as axes, legend and title, should be visible. This enhancement doesn't include UI change, and it is required for cross tab integration.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/AxesRenderer.java
/**
	 * Flushes render event of all Series before clipping
	 * 
	 * @throws ChartException
	 */
	protected void flushClipping( ) throws ChartException
	{
		
		getDeferredCacheManager( ).flushOptions( DeferredCache.FLUSH_LINE
				| DeferredCache.FLUSH_PLANE | DeferredCache.FLUSH_PLANE_SHADOW );
	}
	
	/**
	 * Checks data point entry by types
	 * 
	 * @param scale
	 *            AutoScale for min/max value
	 * @param entry
	 *            data point entry
	 * @return int indicates if data point entry is in the range of plot area. 0
	 *         inside, 1 left side, 2 outside
	 */
	protected final int checkEntryByType( AutoScale scale, Object entry )
	{
		int iOutside = 0;
		if ( entry == null )
		{