Patch to port mod_auth_db to the 2.0 api and also to support

Berlekey DB 3.0. It works for me with both Berkeley DB 3.0.55 and
2.7.7.  It should work with version 1 as well but I haven't tested it.

Submitted by:	Brian Martin <bmartin@penguincomputing.com>
Reviewed by:	Bill Stoddard


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@84921 13f79535-47bb-0310-9956-ffa450edef68