Update ICU to 58.1

source/data/mappings/icu-internal-compound-s2.ucm

Index: source/data/mappings/icu-internal-compound-s2.ucm
diff --git a/source/data/mappings/icu-internal-compound-s2.ucm b/source/data/mappings/icu-internal-compound-s2.ucm
index 7c636b94b78326bb157874de2f4002482ee871bd..119cb963549858f5fe4a66cc2a6f13fd185eac46 100644
--- a/source/data/mappings/icu-internal-compound-s2.ucm
+++ b/source/data/mappings/icu-internal-compound-s2.ucm
@@ -1,3 +1,5 @@
+# Copyright (C) 2016 and later: Unicode, Inc. and others.
+# License & terms of use: http://www.unicode.org/copyright.html
 # *******************************************************************************
 # *
 # *   Copyright (C) 2010, International Business Machines