Implemented registry change notifications.

diff --git a/server/request.h b/server/request.h
index f5fd97d..213da98 100644
--- a/server/request.h
+++ b/server/request.h
@@ -206,6 +206,7 @@
 DECL_HANDLER(save_registry);
 DECL_HANDLER(save_registry_atexit);
 DECL_HANDLER(set_registry_levels);
+DECL_HANDLER(set_registry_notification);
 DECL_HANDLER(create_timer);
 DECL_HANDLER(open_timer);
 DECL_HANDLER(set_timer);
@@ -381,6 +382,7 @@
     (req_handler)req_save_registry,
     (req_handler)req_save_registry_atexit,
     (req_handler)req_set_registry_levels,
+    (req_handler)req_set_registry_notification,
     (req_handler)req_create_timer,
     (req_handler)req_open_timer,
     (req_handler)req_set_timer,