title: Cython No such file or directory: '.pyd' error on Windows
body: <p>I'm trying to build the <a href="http://docs.cython.org/src/quickstart/build.html" rel="noreferrer">Hello World example</a> from Cython tutorial.
  I have written both hello.pyx and setup.py files:</p>
  
  <pre><code># hello.pyx
  def say_hello_to(name):
      print("Hello %s!" % name)
  </code></pre>
  
  <hr>
  
  <pre><code># setup.py
  try:
      from setuptools import setup
      from setuptools import Extension
  except ImportError:
      from distutils.core import setup
      from distutils.extension import Extension
  
  from Cython.Build import cythonize
  
  
  setup(
    name='Hello world app',
    ext_modules=cythonize("hello.pyx"),
  )
  </code></pre>
  
  <p>When I run</p>
  
  <pre><code>python setup.py build_ext --inplace
  </code></pre>
  
  <p>I get the following error:</p>
  
  <pre><code>copying build\lib.win-amd64-2.7\cython_test\hello.pyd -&gt; cython_test
  error: [Errno 2] No such file or directory: 'cython_test\\hello.pyd'
  </code></pre>
  
  <p>Build process works fine and I get a working <code>hello.pyd</code> file, but for some reason setup.py cannot copy the <code>.pyd</code> back into the working directory. How can I fix that?</p>
  
  <p><em>hello.pyx and setup.py files are also available at <a href="https://bitbucket.org/lgyanf/cython-no-such-file/src" rel="noreferrer">BitBucket</a></em></p>