rebase to 2.4.23
    
    - package rebased
    - removed embeded db4
    - removed patches merged by upstream
    - removed no longer required patches
    - merged patches doing manpage changes
    - merged patches exporting ldif API
    - reapplied patches and added description to each one
    - removed unnecessary BuildRequires
    - cleaned %config, %build and %install sections
    - updated database upgrade process:
      - database is exported (slapcat) and reimported (slapadd) when minor
    	version of openldap changes (safe and recomended way)
      - database is upgraded (db4) when minor version of db4 package changes
    	(this is not done in %post anymore, as the database is not embeded,
    	but using triggers)
    
    Resolved: #624616 Bogus links in "SEE ALSO" part of several man-pages
    Resolved: #625740 openldap-2.4.23 is available