Cannot include privileged owner from list even if it has to (#969)

Uunexpected error log "Unable to verify S/MIME signature" (#963)

* review: Won't process sync_include in advance so that processing will be faster.

* Refactoring. Sympa::List::on_the_fly_sync_include() was removed. Instead, "include" request handler had "delay" option.

* Remove unused "last_sync" cache entries.  "last_change" entries remain.

* sync_include will no longer be invoked during Sympa::List->new():
  - No owner defined in a list is no longer treated as error_config.
  - Instead, if no owner defined,
     - If possible, discard incoming message and send back DSN to original sender,
     - or, notifications to owners will be redirected to listmaster(s).

* Refactoring: Remove unused functions

* Small refactoring: mail_tt2/listeditor_notification.tt2 is no longer used.

* Clarify log messages and DSN about undefined owner/editor/listmaster

* Merge @Sympa::ConfDef::params into %Sympa::ListDef::pinfo
* Merge %Conf::old_params into %Sympa::ListDef::pinfo
* Add aliases of parameter names for compatibility to sympa.conf/robot.conf of earlier versions.
* Move content of Sympa::ListDef to Sympa::Config::Schema
* Move content of Sympa::ConfDef to Sympa::Config::Schema
* Defining additional format entries in config schema.
* Merge sympa.conf(5) and list_config(5) into sympa_config(5).

"false" values in XML file prevent list creation (#953)

This bug was injected at 6.2.49b.2 (9b562c6b).

Every time users were loaded via include_sql_query Sympa would raise warnings

support scripts: Add /usr/bin/env in shbang that is nearly (not really) portable way to solve the path.

A module couldn't compile without optional dependency.

[SA 2020-002] Security flaws in setuid wrappers (#943)

Sympa SA 2020-002 (candidate): Setuid wrappers should clear environment variables to avoid exploits.

Revert "Every time users were loaded via include8sql_query Sympa would raise warnings : Use of uninitialized value  in printf at /usr/local/sympa/bin/Sympa/DataSource/SQL.pm line 91. Obviously the issue was introduced back in 2015, as mentionned in https://listes.renater.fr/sympa/arc/sympa-users/2015-12/msg00002.html."

This reverts commit 067e92a1.

Every time users were loaded via include8sql_query Sympa would raise warnings : Use of uninitialized value  in printf at /usr/local/sympa/bin/Sympa/DataSource/SQL.pm line 91. Obviously the issue was introduced back in 2015, as mentionned in https://listes.renater.fr/sympa/arc/sympa-users/2015-12/msg00002.html.

Typos in set_index() of some DatabaseDriver classes.

list index performance update for wwsympa.fcgi do_lists subroutine (#925)

2 fixes related to list families

Updating source texts according to fixes on en_US catalog