update boost on linux

linx64/include/boost/compute/algorithm/copy_n.hpp

@@ -30,19 +30,23 @@ namespace compute {
 /// boost::compute::copy_n(values, 4, vec.begin(), queue);
 /// \endcode
 ///
+/// Space complexity: \Omega(1)
+///
 /// \see copy()
 template<class InputIterator, class Size, class OutputIterator>
 inline OutputIterator copy_n(InputIterator first,
                              Size count,
                              OutputIterator result,
-                             command_queue &queue = system::default_queue())
+                             command_queue &queue = system::default_queue(),
+                             const wait_list &events = wait_list())
 {
     typedef typename std::iterator_traits<InputIterator>::difference_type difference_type;
 
     return ::boost::compute::copy(first,
                                   first + static_cast<difference_type>(count),
                                   result,
-                                  queue);
+                                  queue,
+                                  events);
 }
 
 } // end compute namespace