Update sympa to latest stable release 6.1.11. Lots of changes since the 5.4
series, users are encouraged to read /usr/pkg/share/doc/sympa/NEWS for
details. Summary of new features:

***  New bulk.pl daemon installed with Sympa. This daemon is dedicated to
      mail distribution and allows to parallelize this process on a single
      server as well as on multiple servers.
***  [Olivier Lumineau, CRU] Fresh new web CSS for the web interface.
***  Replace storage of password with encryption by md5 fingerprint. This
      make remind password impossible. So now a one time ticket table is created
      ticket are  sent by email as an authentication token. Ticket can be used
      for lost password, create account, moderation request . It should be
      generalized to all operation that need a email chalenge.
***  New propertie in object message : spam_status .  This feature is used in
    modindex (listing of message waiting for moderation) to show message
    tagued as spam.
    4 new parameters :
- antispam_feature default off
- antispam_tag_header_name default X-Spam-Status
- antispam_tag_header_spam_regexp default ^\s*Yes
- antispam_tag_header_ham_regexp default ^\s*No
***  DKIM : Sympa now supports DKIM for message diffusion and control.
***  web_tt2/Makefile.am, web_tt2/ca.tt2, web_tt2/lca.tt2,
    wwsympa/wwsympa.fcgi.in:  It is now possible to create Custom actions
    at the list or robot level. These custom actions allow you to create
    new pages in the Sympa web interface. for now, you can only display
    informations using this method. any post treatment (such as form
    submission) must be handled outside of Sympa. See
    https://www.sympa.org/manual_6.1/customizing#custom_actions for more
    details.
***  [Submitted by J. jourdan] "suspension of membership." The user can suspend
    his subscription to the lists
    that he subscribes. For a finite length or not. Added a calendar in
    javascript to select a date.

Also, lots of translastion updates, and bug fixes (including security ones)

(bouyer)