title: BUG YUICompressor with special chars
body: <p>I am using the newer version of YUICompressor (2.4.7) to compress my Javascript and CSS files, for a long time, everything was apparently fine...when I realized that the special characters "í" and "Í" are not being converted successfully. Strangely, another special chars are being converted as we expect. Why just "í" and "Í" are not being converted? Because of just these two chars are not OK, I discarded Charset Conflicts between file system and language. It looks like a bug. Could anyone help me with this problem?</p>
  
  <p>See what happens when I convert files:</p>
  
  <p><strong>Converting CSS</strong></p>
  
  <p>From:</p>
  
  <pre><code>@import url("/láÍíàyout.css");
  </code></pre>
  
  <p>To:</p>
  
  <pre><code>@import url("/lá�?íàyout.css");
  </code></pre>
  
  <hr>
  
  <p><strong>Converting JS</strong></p>
  
  <p>From:</p>
  
  <pre><code>var x = 'cícÍsúlúm irmãêîôûúàá';
  </code></pre>
  
  <p>To:</p>
  
  <pre><code>var x="c�c�?súlúm irmãêîôûúàá";
  </code></pre>