ITS#6548,#7092 Unbind,cleanup before client exit.

Gets rid of "(connection lost)" in slapd statslog "closed" message.

Conflicts:

	clients/tools/common.c
	clients/tools/ldapvc.c

CHANGES

@@ -35,6 +35,7 @@ OpenLDAP 2.4.27 Engineering
 	Fixed slapd schema UTF8StringNormalize with 0 length values (ITS#7059)
 	Fixed slapd with dynamic acls for cn=config (ITS#7066)
 	Fixed slapd response callbacks (ITS#6059,ITS#7062)
+	Fixed slapd no_connection warnings with ldapi (ITS#6548,ITS#7092)
 	Fixed slapd return code processing (ITS#7060)
 	Fixed slapd sl_malloc various issues (ITS#6437)
 	Fixed slapd startup behavior (ITS#6848)