Return AUTHZ_GRANTED not AUTHZ_DENIED when redirecting after

successful login/logout.  Use redirection URL from first row returned
by DB query, in the same manner as that used by mod_authn_dbd when
querying for a single record.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@640932 13f79535-47bb-0310-9956-ffa450edef68