Bug 6898: fix DB update that assigns the circulate/overdues_report permission

This patch fixes a bug that prevented the circulate/overdues_report
permission from being assigned to staff users during upgrade.  This
patch will not affect databases that are already running 3.12.x
or later.

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
This will only fix the permissions for updates done
after the patch has been applied. But I agree with
Fridolyn, that we can not safely update permissions for
existing installations.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>