Log Message:
MIMEDefang 2.78 RELEASED

* Fix bug in logic that coalesces multiparts to single-parts if
  possible; the bug broke DKIM signing.

MIMEDefang 2.77 RELEASED

* Change old author's name to "Dianne Skoll" in many places.

MIMEDefang 2.76 RELEASED

* mimedefang.pl.in: Get rid of all Perl function prototypes.
  Perl prototypes are badly-implemented and consensus among
  modern Perl 5 programmers is they shouldn't be used.
  \ 
https://www.securecoding.cert.org/confluence/display/perl/DCL00-PL.+Do+not+use+subroutine+prototypes
* Add support for filter_wrapup callback.  This is called at the
  very end and permits header modifications, but not body
  modifications.  Useful for DKIM-signing.
* mimedefang.pl.in: Fix typo: SOPHOS should have been SAVSCAN
* mimedefang.c: Don't add a MIME-Version header if there is already
  one.
* Fix https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=646347
* Minor clarifications to mimedefang-filter man page.
* Add "All / Summary" button to watch-multiple-mimedefangs.tcl