Previously the check-buttons' labels in the Preferences were separate
widgets. This had the disadvantage that in order to toggle the
check-button with the mouse the check-box had to be clicked. With
this change the check-box can also be toggled by clicking the label.
Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Paul Mackerras <paulus@samba.org>