Log Message:
Update mimedefang to version 2.44

Changes in 2.44:
This release features support for two new Sendmail 8.13 features: the
SOCKETMAP map type, and Sendmail's built-in quarantine mechanism. There are
also some minor bugfixes and documentation cleanups, as well as a fix for a
memory leak with the embedded Perl interpreter on some platforms.

Changes in 2.43:
Various Perl functions can request the C code to delay before returning;
this permits tarpitting without tying up a Perl slave. The multiplexor has
an additional option to run a "tick" function on a periodic basis. There
are minor bugfixes and documentation improvements.

Changes in 2.42:
The multiplexor causes closelog() to avoid problems with embedded Perl
slaves. Support for SpamAssassin's upcoming 3.0.0 Perl API was added. A few
other small bugs were fixed.

Changes in 2.41:
This is a bugfix release only. The most important change is to stop the
action_quarantine_entire_message from sending out notifications each time
it is invoked. A few other minor bugs were fixed.