r20522: make a copy of the objectguid ldb module because:

r20522: make a copy of the objectguid ldb module because:

- I'll add handling of replication meta data to it
  for orginating changes
- I'll pass replication meta data via a ldb control
  for applying replicated changes
- It will also update the replUpToDateVector attribute in
  in root object of the partition
- It will handle deleted records by adding the isDeleted=TRUE attribute
  and move them to the CN=Deleted Objects container of the partition
- I make a copy to play with the code without breaking
  the LDAP backend setup

metze
(This used to be commit 045ddfe1ec626fab5e8fd75c5b47f0525b7ebb01)