This is now just idmap.ldb in the private dir, which remains.

Using "#!/usr/bin/env python" is more portable. It still isn't ideal
though, as we should really use the python path found at configure
time. We do that in many places already, but some don't.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>

Make unixid optional, if value not supplied next id from id pool will be used.
  Create a function to get next id in id pool.

- When a user account is requested by a call always the search filter will be
  passed as argument. This helps us to unify the API
- Add/fix some comments; in particular new comments inform the developer which
  requirements exist if he wants to use calls which manipulate the
  "userPassword" attribute (On s4 no problem - but on certain domain levels on
  Windows Server)

- Centralise the lookups for the default domain (root) in the call "domain_dn"
- Reduce the LDB connections attempts ("connect" calls) from three to one
  - tools should load faster
- Make the LDB connection init more like the "ldb_wrap_connection" call
- Load the right UTF8 casefolder which fixes up problems with special characters
  (discovered by me: e.g. small "Umlaute" (ä, ö, ü, ...) in the DN weren't upcased
  - so records "seemed" lost in TDB)

(This used to be commit 0cc58decd74d20f3d7dff93ddef1c8bce4d49ad0)

The new idmap world does not use the unixUser any more, so we need to
set up the entry (if wanted) in the idmap database.  Users without a
backing unix user will get an allocated uid by idmap later.

Andrew Bartlett
(This used to be commit 8bd8bc1475ddf22d4702dcd17028a9043a5e629f)