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
* @version 1.0 2005.4.22
	 * 
	 * @param relativePos
	 *            The direction to indicate inserting rows above or below.
	 * @param rowNumbers
	 *            The row numbers of the origin selected rows.
	 */
	public void insertRows( final int relativePos, final int[] rowNumbers )
	{
		int rowCount = rowNumbers.length;
		try
		{
			if ( relativePos < 0 )
			{ 
				getTableAdapter( ).insertRows( -rowCount, rowNumbers[0] );
			}
			else
			{
				getTableAdapter( ).insertRows( rowCount,
						rowNumbers[rowCount - 1] );
			}
		}
		catch ( SemanticException e )
		{
			ExceptionHandler.handle( e );
		}
		
	}
	/**
	 * Inserts a row after the row number