Update ICU to 54.1 step 1

source/common/unicode/bytestriebuilder.h

 /*
 *******************************************************************************
-*   Copyright (C) 2010-2013, International Business Machines
+*   Copyright (C) 2010-2014, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *******************************************************************************
 *   file name:  bytestriebuilder.h
 *   encoding:   US-ASCII
 *   tab size:   8 (not used)
 *   indentation:4
 *
 *   created on: 2010sep25
 *   created by: Markus W. Scherer
 */
@@ skipping 120 matching lines @@
     virtual int32_t countElementUnits(int32_t start, int32_t limit, int32_t byteIndex) const;
     virtual int32_t skipElementsBySomeUnits(int32_t i, int32_t byteIndex, int32_t count) const;
     virtual int32_t indexOfElementWithNextUnit(int32_t i, int32_t byteIndex, UChar byte) const;
 
     virtual UBool matchNodesCanHaveValues() const { return FALSE; }
 
     virtual int32_t getMaxBranchLinearSubNodeLength() const { return BytesTrie::kMaxBranchLinearSubNodeLength; }
     virtual int32_t getMinLinearMatch() const { return BytesTrie::kMinLinearMatch; }
     virtual int32_t getMaxLinearMatchLength() const { return BytesTrie::kMaxLinearMatchLength; }
 
-#ifndef U_HIDE_INTERNAL_API
     /**
      * @internal
      */
     class BTLinearMatchNode : public LinearMatchNode {
     public:
         BTLinearMatchNode(const char *units, int32_t len, Node *nextNode);
         virtual UBool operator==(const Node &other) const;
         virtual void write(StringTrieBuilder &builder);
     private:
         const char *s;
     };
-#endif  /* U_HIDE_INTERNAL_API */
 
     virtual Node *createLinearMatchNode(int32_t i, int32_t byteIndex, int32_t length,
                                         Node *nextNode) const;
 
     UBool ensureCapacity(int32_t length);
     virtual int32_t write(int32_t byte);
     int32_t write(const char *b, int32_t length);
     virtual int32_t writeElementUnits(int32_t i, int32_t byteIndex, int32_t length);
     virtual int32_t writeValueAndFinal(int32_t i, UBool isFinal);
     virtual int32_t writeValueAndType(UBool hasValue, int32_t value, int32_t node);
     virtual int32_t writeDeltaTo(int32_t jumpTarget);
 
     CharString *strings;  // Pointer not object so we need not #include internal charstr.h.
     BytesTrieElement *elements;
     int32_t elementsCapacity;
     int32_t elementsLength;
 
     // Byte serialization of the trie.
     // Grows from the back: bytesLength measures from the end of the buffer!
     char *bytes;
     int32_t bytesCapacity;
     int32_t bytesLength;
 };
 
 U_NAMESPACE_END
 
 #endif  // __BYTESTRIEBUILDER_H__