title: Locale in mongoregex
body: <p>Hi I have a problem in mongoregex when Insensitive Case search. In Turkish language the uppercase of i is İ not I, and we have a ı char and uppercase of that is I.</p>
  
  <pre><code>ı-&gt;I
  i-&gt;İ
  </code></pre>
  
  <p>I have a record in database like "Anıl" and when I search with;</p>
  
  <pre><code>    $rxp = new MongoRegex('/Il/i');
  </code></pre>
  
  <p>it must match the record. But it doesn't.</p>
  
  <p>I tried locale flag;</p>
  
  <pre><code>    setlocale(LC_ALL, "turkish","tr_TR.UTF-8");
      $rxp = new MongoRegex('/Il/il');
  </code></pre>
  
  <p>doesn't work either...</p>