--- old/make/data/tzdata/systemv	2018-10-26 09:16:33.562531663 -0400
+++ new/make/data/tzdata/systemv	2018-10-26 09:16:33.362531663 -0400
@@ -21,6 +21,8 @@
 # or visit www.oracle.com if you need additional information or have any
 # questions.
 #
+# tzdb data for System V rules (this file is obsolete)
+
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.