add RCS ids

--HG--
branch : HEAD
diff --git a/lib/zip_unchange_data.c b/lib/zip_unchange_data.c
index 10a8d37..350b78f 100644
--- a/lib/zip_unchange_data.c
+++ b/lib/zip_unchange_data.c
@@ -1,4 +1,6 @@
 /*
+  $NiH$
+
   zip_unchange_data.c -- undo helper function
   Copyright (C) 1999 Dieter Baron and Thomas Klaunser