apache2 problem with dbmmanage and AuthDBMUserFile

[Aaron Wohl]

Problem: apache2 can check a database for user id password/group info. 
Its created with the dbmmanage that comes with apache2. apache2 2.0.47
and dbmmanage pick different kinds of dbm files and can not talk to each
other. This is on 4.9-PRERELEASE.

apache2 uses some glue to run with any of the many kinds of db/dbm/ngdbm
files.  It picks the kind with a .pag and .dir file (db i think).  There
is a runtime config directive AuthDBMType. However it only has the one
type built in.

dbmmanage uses perl's AnyDBM_File which picks ndbm.  dmmanage doesnt have
any switches to pick the kind of db/dbm.

With apache 1.x on freebsd it used ndbm for both apache and dbmmanage
without any hassles.