which should be at most 8 bytes. However if we read more than the minimum
message length, we have a problem because we steal bytes from any following
message, and there is no buffer mechanism to push back excess data.
The shortest legitimate message is Unbind at 7 bytes, but there shouldn't
be anything following it. Abandon at 8 bytes is next, so always requesting
at least 8 bytes should be safe. Always requesting 9 was a problem.

Please double-check these assumptions...

Add HDB to test suite

(appears to be correct based on iPlanet documentation)

(Seems to me that attr_mergeit() can be deprecated in favour of the
former -- Howard?)

dereference policy

(real validatator needed).

Fix idl_cache_put

Use IDL cache in bdb_dn2id_children.

Add bdb_cache_children, remove cache flag manipulation from dn2id_children

HEADS UP: May break some Kerberos deployments.