Add several missing dependencies, particularly for the caff tool. It
now runs, but I've been unable to get it working fully yet, possibly
due to problems with the actual sending of the emails.

Christopher Baines (12):
  gnu: Add perl-moox.
  gnu: Add perl-data-perl.
  gnu: Add perl-moox-handlesvia.
  gnu: Add perl-moox-late.
  gnu: Add perl-convert-binhex.
  gnu: Add perl-mailtools.
  gnu: Add perl-mime-tools.
  gnu: Add perl-net-idn-encode.
  gnu: Add perl-text-template.
  gnu: Add perl-gnupg-interface.
  gnu: Add libmd.
  gnu: Update signing-party.

 gnu/packages/crypto.scm |  31 +++++
 gnu/packages/gnupg.scm  |  79 +++++++++++--
 gnu/packages/perl.scm   | 307 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 406 insertions(+), 11 deletions(-)