Update ICU to 58.1

source/i18n/unicode/uregex.h

Index: source/i18n/unicode/uregex.h
diff --git a/source/i18n/unicode/uregex.h b/source/i18n/unicode/uregex.h
index c6381ca16912609ee3d1a66ff1bcffaf6ef64730..ab85719db7ff487afce14c7e8ce425c366a0e933 100644
--- a/source/i18n/unicode/uregex.h
+++ b/source/i18n/unicode/uregex.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) 2004-2015, International Business Machines
+*   Copyright (C) 2004-2016, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 *   file name:  uregex.h
@@ -607,7 +609,6 @@ U_STABLE int32_t U_EXPORT2
 uregex_groupCount(URegularExpression *regexp,
                   UErrorCode         *status);
 
-#ifndef U_HIDE_DRAFT_API
 /**
   * Get the group number corresponding to a named capture group.
   * The returned number can be used with any function that access
@@ -622,9 +623,9 @@ uregex_groupCount(URegularExpression *regexp,
   *                     nul-terminated string.
   * @param  status      A pointer to a UErrorCode to receive any errors.
   *
-  * @draft ICU 55
+  * @stable ICU 55
   */
-U_DRAFT int32_t U_EXPORT2
+U_STABLE int32_t U_EXPORT2
 uregex_groupNumberFromName(URegularExpression *regexp,
                            const UChar        *groupName,
                            int32_t             nameLength,
@@ -646,14 +647,13 @@ uregex_groupNumberFromName(URegularExpression *regexp,
   *                     nul-terminated.
   * @param  status      A pointer to a UErrorCode to receive any errors.
   *
-  * @draft ICU 55
+  * @stable ICU 55
   */
-U_DRAFT int32_t U_EXPORT2
+U_STABLE int32_t U_EXPORT2
 uregex_groupNumberFromCName(URegularExpression *regexp,
                             const char         *groupName,
                             int32_t             nameLength,
                             UErrorCode          *status);
-#endif  /* U_HIDE_DRAFT_API */
 
 /** Extract the string for the specified matching expression or subexpression.
   * Group #0 is the complete string of matched text.