r792: - changed the ldb ldif_* functions to be in the ldb_ namespace

r792:  - changed the ldb ldif_* functions to be in the ldb_ namespace

 - added better error reporting in ldbdel

 - fixed a bug in handling packing of records which contain elements
   with no values (it caused db corruption)

 - allow search with "dn" as target attribute
(This used to be commit 36575396234e3d35dbd442c8f1ff54a17ae64e64)