Log Message:
Update to 6.1.24. Changes since 6.1.22:
- wwsympa/wwsympa.fcgi.in:  Preventing faulty newsletter sending (security fix)
- src/sympa.pl.in: [Submitted by B. Marchal, univ. Lorraine] the
  loop_prevention_regex parameter was never taken into account.
- New scenarios to check DKIM signature
- When the user requests change of password via WWSympa or SympaSOAP, new
  password may be checked its strength.
- src/lib/Scenario.pm:  Now CustomCondition can set the action to
  take (do_it, reject ...) by setting $_, this allows for complex,
  single-module CustomConditions.
and various bug fixes