Update ICU to 58.1

source/samples/layout/RenderingSurface.h

Index: source/samples/layout/RenderingSurface.h
diff --git a/source/samples/layout/RenderingSurface.h b/source/samples/layout/RenderingSurface.h
index ab0ad561956f7baebcd5ba3d88b941961870e7d7..f4a1528c0e9c9766cffbc52f7be210833d9b2804 100644
--- a/source/samples/layout/RenderingSurface.h
+++ b/source/samples/layout/RenderingSurface.h
@@ -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) 1999-2003, International Business Machines
  *   Corporation and others.  All Rights Reserved.
  *