Log Message:
Update sympa to 5.2.4. Should fix pkg/36007 as a side effect.

Main changes since 4.1.2:
Full virtual robot support ; you can now create 2 lists with the same name in
   different virtual robots
Message topics : list messages can be tagged with topics. List owner defines
   a set of topics for the list.  List members can select topics and only
   receive related messages.
Sympa is now VERP enabled
new return_path_suffix parameter in sympa.conf
new 'digest_max_size' list parameter. If a digest exceeds this limit, then
   multiple messages are sent.
New set of web templates, CSS and XHTML compatible.
RSS channels are providing the following features :
   * latest messages in list archives
   * latest documents in web repository
   * latest created mailing lists
   * most active mailing lists

Also, lots of other small features, translations and bug fixes.