Update French translation

* manual/custom-error.xml.fr
* manual/content-negotiation.xml.fr
* manual/bind.xml.fr
* manual/configuring.xml.fr
    new translations

Translated by: Vincent Deffontaines <vincent gryzor.com>
Reviewed by: alain B <chbok hotmail.com>,
             Jean-François El Fouly <jean-francois elfouly.nom.fr>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@155619 13f79535-47bb-0310-9956-ffa450edef68