OpenLDAP 2.x is supported.

and ldap_next_attribute if using newer interface.  Current test for this
is an #if LDAP_API_VERSION >= 2004.

reworked rdn_attrs to use ldap_explode_rdn; maybe we should remove escapes "\" from parts directly in ldap_explode_rdn

by slapd/tools/*; slap_mods_free is needed by ldbm_back_modrdn after
fixing ITS#1184 (at present -DMULTIATTRVAL_RDN is needed when compiling
back-ldbm/modrdn.c to trigger the compilation of new code).

added rdn_attrs: parses a rdn and returns types and values in two arrays (honors '+' separator according to RFC 2253)

for LDBM backends called "dbsync", which takes minimum of one argument up
to 3 args which are sync frequency, # of delays, and delay periods.  See
man page update for "dbsync" configuration for more details.

Needs to be connection specific

need to rework cert check to use per lconn host name