title: MEEP cygwin install issue
body: <p>I'm trying to install MEEP through cygwin, I have all the required packages installed, however when I run <code>./configure</code> I get the following error message:</p>
  
  <pre><code>configure: error: Couldn't find the required libctl library.
  </code></pre>
  
  <p>Even though the libctl package is definitely installed!</p>