Bug 157744 [Regression]GUI has memory leak
Causes by 153732, designer has a regression to hold the report design handle in a hashmap. That causes the report design can not be released.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/TableEditPart.java
* 
	 * @see org.eclipse.birt.report.designer.internal.ui.editors.schematic.editparts.ReportElementEditPart#createGuideHandle()
	 */
	protected AbstractGuideHandle createGuideHandle( )
	{
		TableGuideHandle handle = new TableGuideHandle( this );
		handle.setIndicatorLabel( GUIDEHANDLE_TEXT );
		handle.setIndicatorIcon( ReportPlatformUIImages.getImage( IReportGraphicConstants.ICON_ELEMENT_TABLE ) );
		return handle;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.editparts.AbstractGraphicalEditPart#createFigure()
	 */
	protected IFigure createFigure( )
	{
		TableFigure viewport = new TableFigure( );
		viewport.setOpaque( false );
		innerLayers = new FreeformLayeredPane( );
		createLayers( innerLayers );
		viewport.setContents( innerLayers );
		return viewport;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.editparts.AbstractEditPart#createEditPolicies()
	 */
	protected void createEditPolicies( )