r23762: Fix DN renames over LDAP, and instrument the partition module. Add a

test to prove the behaviour of LDAP renames etc.

Fix LDB to return correct error code when failing to rename one DN
onto another.

Andrew Bartlett

source/ldap_server/ldap_backend.c

@@ -621,6 +621,7 @@ static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
 		result = LDAP_OTHER;
 		goto reply;
 	}
+	newdn = parentdn;
 
 reply:
 	modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);