Update ICU to 58.1

source/common/uhash.h

Index: source/common/uhash.h
diff --git a/source/common/uhash.h b/source/common/uhash.h
index 1761dd0a2e9209deee5d87587b4afeb1c554d937..e53ce73928dd49f10c59bb7bc8af8deb73678e07 100644
--- a/source/common/uhash.h
+++ b/source/common/uhash.h
@@ -1,3 +1,5 @@
+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
 /*
 ******************************************************************************
 *   Copyright (C) 1997-2015, International Business Machines
@@ -680,8 +682,8 @@ uhash_equals(const UHashtable* hash1, const UHashtable* hash2);
 U_NAMESPACE_BEGIN
 
 /**
- * \class LocalUResourceBundlePointer
- * "Smart pointer" class, closes a UResourceBundle via ures_close().
+ * \class LocalUHashtablePointer
+ * "Smart pointer" class, closes a UHashtable via uhash_close().
  * For most methods see the LocalPointerBase base class.
  *
  * @see LocalPointerBase