Update French translation

* manual/dns-caveats.xml.fr
* manual/handler.xml.fr
* manual/dso.xml.fr
* manual/filter.xml.fr
* manual/env.xml.fr
    new translations

Translated by: Vincent Deffontaines <vincent gryzor.com>
Reviewed by: alain B <chbok hotmail.com>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@155795 13f79535-47bb-0310-9956-ffa450edef68