add {create,modify}Timestamp to subschema subentry (SHOULD per RFC2251; use server startup time to be conservative)

fix extendedMatch and approx hfilter andling; get rid of subtree_cond (argh, need to trim it from config and docs ...)

added referral support to back-{ldap,meta}; need to allow send_serch_reference() handle NULL entry pointer

let caller log it if they care.

Ignore DB_KEYEXIST and DB_NOTFOUND errors in key_change.

first time after all. see read(2) and write(2)...)

Make sure client controls are not specified multiple times.
NT port updates.

Update NT build.

common controls across all tools.