LDBM slapadd accepts orphaned entries (ITS#3339)

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

Full_Name: Hallvard B Furuseth
Version: HEAD
OS: 
URL: 
Submission from: (NULL) (129.240.186.42)
Submitted by: hallvard


slapd.conf:
  include    /scratch/hbf/etc/openldap/schema/core.schema
  database   ldbm
  directory  /scratch/hbf/var/openldap-data
  suffix     dc=uio,dc=no
  index	     objectClass eq

test.ldif:
  dn: ou=foo,ou=bar,dc=uio,dc=no
  objectClass: organizationalUnit
  ou: foo

OTOH, BDB catches the error.  I haven't checked HDB.
Maybe the bug was introduced when BDB slapadd was modified to accept
entries out of order?