PR#444: tweak to allow people to use netscape dbm files, enabled if

NETSCAPE_DBM_COMPAT defined.  Why not make it easy for people to upgrade
from netscape?

Submitted by:	Alexander Spohr <aspohr@netmatic.com>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@78465 13f79535-47bb-0310-9956-ffa450edef68