Log Message:
Update mimedefang to 2.63

Changes since 2.62:

* mimedefang-multiplexor.c: Relax the umask when creating the unprivileged
  socket ("-a" command-line option.)
* mimedefang.c(eom): If we do not have a queue ID yet, try to obtain one
  in eom. This is designed to improve operation with Postfix, which does
  not assign a queue ID until after the first successful RCPT. Based on a
  patch from Henrik Krohns.
* examples/init-script.in: Added MD_SKIP_BAD_RCPTS init script option
  (suggested by John Nemeth)
* Remove support for OpenAntivirus. It's a dead product.
* mimedefang.pl.in(spam_assassin_status): Call $mail->finish() to prevent
  temporary files from accumulating.
* redhat/mimedefang-init.in: Add configtest routine to check filter
  syntax.

Changes since 2.61:

* A new "change_sender" action lets you change the envelope sender. Only
  works with Sendmail/Milter 8.14.0 and newer!
* Clam interface code has been fixed to work properly with ClamAV 0.90
  and later.
* Other minor improvements and bugfixes.