Bug 34445 Reverse sort for AddressBook example
When you click on the header for a column in the AddressBook example, it sorts the selected column. It would be nice if selecting it again reversed the sort as most client applications would.
examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/addressbook/AddressBook.java
* functions.
 *
 * @param	menuBar	Menu
 *				the <code>Menu</code> that file contain
 *				the Help submenu.
 */
private void createHelpMenu(Menu menuBar) {
	
	
	MenuItem item = new MenuItem(menuBar, SWT.CASCADE);
	item.setText(resAddressBook.getString("Help_menu_title"));	
	Menu menu = new Menu(shell, SWT.DROP_DOWN);
	item.setMenu(menu);
	
	
	MenuItem subItem = new MenuItem(menu, SWT.NULL);
	subItem.setText(resAddressBook.getString("About"));
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			MessageBox box = new MessageBox(shell, SWT.NONE);
			box.setText(resAddressBook.getString("About_1") + shell.getText());
			box.setMessage(shell.getText() + resAddressBook.getString("About_2"));
			box.open();		
		}
	});
}
/**
 * To compare entries (rows) by the given column
 */
private class RowComparator implements Comparator {