LDAPext discussions).
Add attrs and attrsonly support to monitor/config info.
Add rdn attributes to schema/monitor/config.
Add extensibleObject objectclass to schema/monitor/config.
Add top objectclass to rootdse/monitor/config.
Remove opattrs option from send_search_entry().

NULL does not meet basic syntax rules.

Includes support for update referral for each replicated backend.
	Reworked replication test to use update referral.
Includes major rewrite of response encoding codes (result.c).
Includes reworked alias support and eliminates old suffix alias codes
(can be emulated using named alias).
Includes (untested) support for the Manage DSA IT control.
Works in LDAPv2 world.  Still testing in LDAPv3 world.
Added default referral (test009) test.

LDAP_OPT_MATCH_STRING to ldap.h and libldap/options.c.