bug 2503: removing Force* subs and replacing them with calls to C4::Circulation subs

bug 2503: removing Force* subs and replacing them with calls to C4::Circulation subs

The offline circulation file processor originally used its own methods to
insert circulation data. This patch takes advantage of the updated
C4::Circulation methods that allow us to specify dates in the past.
This makes the offline circulation file processor use C4::Circulation
functions instead of its own and removes the deprecated subs.

moving from ForceIssue to AddIssue
replacing ForceRenewal with AddRenewal
moving from ForceReturn to MarkIssueReturned
removing deprecated Force* subs
fixing a few bugs in process_koc.pl

Signed-off-by: Galen Charlton <galen.charlton@liblime.com>