- add "updatedn" to the replication specification
- return referral to update to the slave server

directly instead of going thru filter_candidates. Use hdb_ function prefix
in dn2id.c to avoid ambiguities...

order to prevent the operation from being passed to the backend. It
need only return a non-zero error code.

- persistent syncreplCookie (in syncConsumerSubentry) access becomes reliable

- LCUP / SYNC search both entries and subentries at the same time

replace calls to dnNormalize2 with calls to dnNormalize

rename dnPretty2 to dnPretty