Update longoverdue.pl cron job to manage setting lost values.

Update longoverdue.pl cron job to manage setting lost values.

This patch deprecates the NoReturnSetLost system preference, which, as it
turns out, was not implemented anyway.  New longoverdue script allows one to
specify on the commandline system-wide delays for changing items to different
lost statuses, and optionally charge for the item.

Signed-off-by: Joshua Ferraro <jmf@liblime.com>