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/ReportElementEditPart.java
* 
	 * @see org.eclipse.birt.report.designer.core.model.IModelAdaptHelper#getInsets()
	 */
	public Insets getInsets( )
	{
		return new Insets( getFigure( ).getInsets( ) );
	}
	protected ReportItemtHandleAdapter getReportElementHandleAdapt( )
	{
		return (ReportItemtHandleAdapter) getModelAdapter( );
	}
	protected void refreshPageClip( )
	{
		if ( getFigure( ) instanceof ReportElementFigure )
		{
			Object obj = getViewer( ).getProperty( DeferredGraphicalViewer.LAYOUT_SIZE );
			if ( obj instanceof Rectangle )
			{
				( (ReportElementFigure) getFigure( ) ).setPageClip( (Rectangle) obj );
			}
		}
	}
	protected void updateBaseBorder( DesignElementHandle handle,
			BaseBorder border )
	{
		border.bottomColor = handle.getPropertyHandle( StyleHandle.BORDER_BOTTOM_COLOR_PROP )
				.getStringValue( );
		border.bottomStyle = handle.getPropertyHandle( StyleHandle.BORDER_BOTTOM_STYLE_PROP )
				.getStringValue( );
		border.bottomWidth = handle.getPropertyHandle( StyleHandle.BORDER_BOTTOM_WIDTH_PROP )