Removed parenthesis from all require_once and replaced with single quotes

htdocs/adherents/admin/adherent.php

htdocs/adherents/admin/adherent_extrafields.php

htdocs/adherents/admin/mailman.php

htdocs/adherents/admin/public.php

htdocs/adherents/admin/spip.php

htdocs/adherents/agenda.php

htdocs/adherents/card_subscriptions.php

htdocs/adherents/cartes/carte.php

htdocs/adherents/class/adherent.class.php

htdocs/adherents/class/adherent_type.class.php

htdocs/adherents/class/cotisation.class.php

htdocs/adherents/cotisations.php

htdocs/adherents/document.php

htdocs/adherents/fiche.php

htdocs/adherents/fiche_subscription.php

htdocs/adherents/htpasswd.php

htdocs/adherents/index.php

htdocs/adherents/info.php

htdocs/adherents/info_subscription.php

htdocs/adherents/ldap.php