Update ICU to 54.1 step 1

source/common/uvectr64.h

 /*
 **********************************************************************
-*   Copyright (C) 1999-2010, International Business Machines
+*   Copyright (C) 1999-2014, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 */
 
 //
 //  UVector64 is a class implementing a vector of 64 bit integers.
 //            It is similar to UVector32, but holds int64_t values rather than int32_t.
 //            Most of the code is unchanged from UVector.
 //
 
@@ skipping 101 matching lines @@
     //UBool removeAll(const UVector64& other);
 
     //UBool retainAll(const UVector64& other);
 
     //void removeElementAt(int32_t index);
 
     void removeAllElements();
 
     int32_t size(void) const;
 
-    //UBool isEmpty(void) const;
+    inline UBool isEmpty(void) const { return count == 0; }
 
     // Inline.  Use this one for speedy size check.
     inline UBool ensureCapacity(int32_t minimumCapacity, UErrorCode &status);
 
     // Out-of-line, handles actual growth.  Called by ensureCapacity() when necessary.
     UBool expandCapacity(int32_t minimumCapacity, UErrorCode &status);
 
     /**
      * Change the size of this vector as follows: If newSize is
      * smaller, then truncate the array, possibly deleting held
@@ skipping 132 matching lines @@
     if (count > 0) {
         count--;
         result = elements[count];
     }
     return result;
 }
 
 U_NAMESPACE_END
 
 #endif