Bug 11872 - Lost overdue items should not generate fines

Bug 11872 - Lost overdue items should not generate fines

An item can be marked as lost by longoverdue.pl, but left checked out to
the patron. In this case, the item will continue to accrue fines.

Test Plan:
1) Check out an item and back date it so it is overdue and should
   generate fines.
2) Mark the item as lost by either using longoverdue.pl, or just
   by setting itemlost to 1 by directly accessing the database
3) Run fines.pl
4) Note the overdue generated a fine
5) Repeat steps 1-2
6) Apply this patch
7) Run fines.pl
8) Note a fine was not generated

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>