Update ICU4C to version 51.1.

Change-Id: I50b7fdc22eb09ee9a3b5d0704183d3fe5f371338
diff --git a/i18n/region_impl.h b/i18n/region_impl.h
new file mode 100644
index 0000000..402dbee
--- /dev/null
+++ b/i18n/region_impl.h
@@ -0,0 +1,43 @@
+/*
+*******************************************************************************
+* Copyright (C) 2013, International Business Machines Corporation and         *
+* others. All Rights Reserved.                                                *
+*******************************************************************************
+*
+* File REGION_IMPL.H
+*
+*******************************************************************************
+*/
+
+#ifndef __REGION_IMPL_H__
+#define __REGION_IMPL_H__
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_FORMATTING
+    
+#include "uvector.h"
+#include "unicode/strenum.h"
+
+U_NAMESPACE_BEGIN
+
+
+class RegionNameEnumeration : public StringEnumeration {
+public:
+    RegionNameEnumeration(UVector *fNameList, UErrorCode& status);
+    virtual ~RegionNameEnumeration();
+    static UClassID U_EXPORT2 getStaticClassID(void);
+    virtual UClassID getDynamicClassID(void) const;
+    virtual const UnicodeString* snext(UErrorCode& status);
+    virtual void reset(UErrorCode& status);
+    virtual int32_t count(UErrorCode& status) const;
+private:
+    int32_t pos;
+    UVector *fRegionNames;
+};
+
+U_NAMESPACE_END
+
+#endif
+
+#endif