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
* The contents' Figure will be added to the PRIMARY_LAYER.
	 * 
	 * @see org.eclipse.gef.GraphicalEditPart#getContentPane()
	 */
	public IFigure getContentPane( )
	{
		return getLayer( PRIMARY_LAYER );
	}
	/**
	 * @return the table adapter
	 */
	protected TableHandleAdapter getTableAdapter( )
	{
		return (TableHandleAdapter) getModelAdapter( );
	}
	/**
	 * Get all rows list
	 * 
	 * @return all rows list.
	 */
	public List getRows( )
	{
		return getTableAdapter( ).getRows( );
	}
	/**
	 * @param number
	 *            a row position
	 * @return a specific row.
	 */
	public Object getRow( int number )