Bug#425533: kleopatra: should allow seahorse as an alternative to gnupg-agent

[Vincent Danjean <Vincent.Danjean@ens-lyon.org>]

  Hi,

  Kleopatra works perfectly with seahorse installed and gnupg-agent not
installed in the system[1]. Please, reconsider your [wont-fix] and add
the suggested alternative in the Kleopatra control file.

  Best regards,
    Vincent

[1] Actually, to install kleopatra and seahorse but not gnupg-agent, it
is also needed to install a small package created with equivs with
something as:
Package: gnupg-agent-fake
Provides: gnupg-agent
Conflicts: gnupg-agent
Description: avoid to install real gnupg-agent package
 Avoid to install real gnupg-agent package