title: Cython runtests.py: no attribute 'may_share_memory'
body: <p>I installed cython on Windows (running python(x,y)) by downloading it from <a href="http://cython.org/" rel="nofollow">http://cython.org/</a> and I ran </p>
  
  <pre><code>python setup.py install 
  </code></pre>
  
  <p>in the installation directory. There is a testmodule "runtests.py" in the installation folder and it gives the error message </p>
  
  <pre><code>may_share_memory = multiarray.may_share_memory
  AttributeError: 'module' object has no attribute 'may_share_memory'
  </code></pre>
  
  <p>How can I make the error go away?</p>
  
  <p>UPDATE: It seems my numpy-version was the reason for this error. I have downloaded numpy again from the python(x,y) website (<a href="https://code.google.com/p/pythonxy/wiki/StandardPlugins" rel="nofollow">https://code.google.com/p/pythonxy/wiki/StandardPlugins</a>) and the error disappeared. </p>