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
TableUtil.calculateNewSelection( TableUtil.getUnionBounds( list ),
					list,
					getChildren( ) );
			return list.size( ) == size;
		}
		return rt;
	}
	/**
	 * Split merged cells
	 * 
	 * @param part
	 */
	public void splitCell( TableCellEditPart part )
	{
		try
		{
			getTableAdapter( ).splitCell( part.getModel( ) );
		}
		catch ( ContentException e )
		{
			ExceptionHandler.handle( e );
		}
		catch ( NameException e )
		{
			ExceptionHandler.handle( e );
		}
		catch ( SemanticException e )
		{
			ExceptionHandler.handle( e );
		}