Update ICU to 58.1

source/allinone/icucheck.bat

Index: source/allinone/icucheck.bat
diff --git a/source/allinone/icucheck.bat b/source/allinone/icucheck.bat
index d4e96a38f74f9f2689e7ead7cd2fe21011178433..f8331a0122bc52f536fdefbcf52fd73bd1119c1e 100644
--- a/source/allinone/icucheck.bat
+++ b/source/allinone/icucheck.bat
@@ -1,4 +1,6 @@
 @echo off
+REM Copyright (C) 2016 and later: Unicode, Inc. and others.
+REM License & terms of use: http://www.unicode.org/copyright.html
 REM  ********************************************************************
 REM  * COPYRIGHT:
 REM  * Copyright (c) 2010-2014, International Business Machines Corporation
@@ -89,7 +91,7 @@ set ICUFAILCNT=0
 :OK_cintltst
 @set ICURUN=%ICURUN% %THT%
 
-@REM  (Layout is deprecated)
+@REM  (Layout is deprecated - this would require HarfBuzz)
 @REM  @set THT=letest
 @REM  @echo ==== %THT% =========================================================================
 @REM  @cd %ICU_ICUDIR%\source\test\letest
@@ -126,4 +128,4 @@ echo Failing Tests: %ICUFAILED%
 echo -
 echo FAILED!
 
-exit /b 1
+exit /b 1