title: Cython setup.py for several .pyx
body: <p>I would like to cythonize faster. Code for one .pyx is</p>
  
  <pre><code>from distutils.core import setup
  from Cython.Build import cythonize
  
  setup(
      ext_modules = cythonize("MyFile.pyx")
  )
  </code></pre>
  
  <p>What if i want to cythonize</p>
  
  <ul>
  <li><p>several files with ext .pyx, that i will call by their name</p></li>
  <li><p>all .pyx files in a folder</p></li>
  </ul>
  
  <p>What would be python code for the setup.py in both cases ?</p>