Update ICU to 58.1

source/common/unicode/uconfig.h

Index: source/common/unicode/uconfig.h
diff --git a/source/common/unicode/uconfig.h b/source/common/unicode/uconfig.h
index 307d288f94ce21a431075b38e33803a87eb97d67..77a476dd8974ec198c4d6a2051c53ffa1c8295e6 100644
--- a/source/common/unicode/uconfig.h
+++ b/source/common/unicode/uconfig.h
@@ -1,6 +1,8 @@
+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
 /*  
 **********************************************************************
-*   Copyright (C) 2002-2015, International Business Machines
+*   Copyright (C) 2002-2016, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 *   file name:  uconfig.h
@@ -286,7 +288,7 @@
  * This is not possible on EBCDIC platforms
  * because they need ibm-37 or ibm-1047 default converters.
  *
- * @draft ICU 55
+ * @stable ICU 55
  */
 #ifndef UCONFIG_ONLY_HTML_CONVERSION
 #   define UCONFIG_ONLY_HTML_CONVERSION 0