Update ICU to 58.1

source/samples/datecal/cal.cpp

Index: source/samples/datecal/cal.cpp
diff --git a/source/samples/datecal/cal.cpp b/source/samples/datecal/cal.cpp
index e1e3961b4810494f2d9d654f2fee06b43ed50a26..502c04b8d73cd62077c377cfebcebd424de2aa0c 100644
--- a/source/samples/datecal/cal.cpp
+++ b/source/samples/datecal/cal.cpp
@@ -1,6 +1,12 @@
 /*
 *******************************************************************************
 *
+*   Copyright (C) 2016 and later: Unicode, Inc. and others.
+*   License & terms of use: http://www.unicode.org/copyright.html#License
+*
+*******************************************************************************
+*******************************************************************************
+*
 *   Copyright (C) 2002-2012, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *