Update ICU to 58.1

source/data/translit/el_Upper.txt

Index: source/data/translit/el_Upper.txt
diff --git a/source/data/translit/el_Upper.txt b/source/data/translit/el_Upper.txt
index e8d40f2ec0eca133a946d8bd926e68e1bd8a21a6..3c3ff80f66c2efbab8df064650c88f3f935f7a4a 100644
--- a/source/data/translit/el_Upper.txt
+++ b/source/data/translit/el_Upper.txt
@@ -1,14 +1,17 @@
-# ***************************************************************************
-# *
-# *  Copyright (C) 2004-2015, International Business Machines
-# *  Corporation; Unicode, Inc.; and others.  All Rights Reserved.
-# *
-# ***************************************************************************
+# © 2016 and later: Unicode, Inc. and others.
+# License & terms of use: http://www.unicode.org/copyright.html#License
+#
 # File: el_Upper.txt
-# Generated from CLDR 
+# Generated from CLDR
 #
+
+# Copyright (C) 2011-2013, Apple Inc. and others. All Rights Reserved.
+# Remove \0301 following Greek, with possible intervening 0308 marks.
 ::NFD();
+# For uppercasing (not titlecasing!) remove all greek accents from greek letters.
+# This is done in two groups, to account for canonical ordering.
 [:Greek:] [^[:ccc=Not_Reordered:][:ccc=Above:]]*? { [\u0313\u0314\u0301\u0300\u0306\u0342\u0308\u0304] → ;
 [:Greek:] [^[:ccc=Not_Reordered:][:ccc=Iota_Subscript:]]*? { \u0345 → ;
 ::NFC();
 ::Any-Upper();
+