core: log message about dlflags from modules was made notice instead of warning

sr_module.c

@@ -622,7 +622,7 @@ reload:
 		if (new_dlflags!=dlflags && new_dlflags!=DEFAULT_DLFLAGS) {
 			/* we have to reload the module */
 			dlclose(handle);
-			WARN("%s: exports dlflags interface is deprecated and it will not"
+			NOTICE("%s: exports dlflags interface is deprecated and it will not"
 					" be supported in newer versions; consider using"
 					" mod_register() instead\n", path);
 			dlflags=new_dlflags;