3.0.0-release-branch: finally clean shutdown

Hi, just to confirm that the SQL custom query fixes during shutdown of 2.x also helped in the 3.0 release branch: it now shuts down cleanly with my production config. Thanks, Stefan -- Stefan WINTER Ingenieur de Recherche Fondation RESTENA - Réseau Téléinformatique de l'Education Nationale et de la Recherche 6, rue Richard Coudenhove-Kalergi L-1359 Luxembourg Tel: +352 424409 1 Fax: +352 422473