Patch: add OpenLDAPaci #public# access (ITS#2005)

[h.b.furuseth@usit.uio.no]

Full_Name: Hallvard B. Furuseth
Version: HEAD
OS: Linux
URL: http://folk.uio.no/hbf/OpenLDAP/acl-public.txt
Submission from: (NULL) (129.240.186.42)


I couldn't find a way for an OpenLDAPaci to grant public access to an
entry, so I added a dnType #public# for that.  It is in the position
of subjectDn in the draft, which seems kind of stupid, so I put it
in the position of dnType instead.