title: missing utility.hpp in opencv 2.4.6
body: <p>I am using opencv 2.4.6 which I believe is the latest version.</p>
  
  <p>I am trying to test with ocl module and developing an application like this: </p>
  
  <p><a href="https://github.com/nzjrs/opencv/blob/master/samples/ocl/surf_matcher.cpp" rel="nofollow">https://github.com/nzjrs/opencv/blob/master/samples/ocl/surf_matcher.cpp</a> </p>
  
  <p>But I am getting error that </p>
  
  <p>opencv2/core/utility.hpp</p>
  
  <p>is not available. Looking at opencv directory, I can see that it is not in opencv include directory. </p>
  
  <p>Where can I download it?</p>