Fix to the hashtable support

Renamed alloc_dcb, free_dcb and connect_dcb to be more consistant, e.g. dcb_alloc, dcb_free and dcb_connect

modules/routing/readconnroute.c

@@ -210,7 +210,7 @@ int		i;
 	 * connection in the client->dcb
 	 */
 
-	client->dcb = connect_dcb(candidate->server, session, candidate->server->protocol);
+	client->dcb = dcb_connect(candidate->server, session, candidate->server->protocol);
 
 	/* Add this session to the list of active sessions */
 	spinlock_acquire(&inst->lock);