title: multilinguale file name issue convert to url encode in browser
body: <p>When user try to download file in pure <strong>ie8</strong> , not compatibility mode which have multilingual character in name it shown "fileAttachment" name .</p>
  
  <p>that time i using</p>
  
  <pre><code>header("Content-Disposition: attachment; filename*=UTF-8''".rawurlencode ($fileInfo['fileName']));
  </code></pre>
  
  <p>to fix that error i am using</p>
  
  <pre><code> header('Content-Disposition: attachment; filename="'.rawurlencode($fileInfo['fileName']).'"');
  </code></pre>
  
  <p>but issue here is that all multilingual character convert into url encode form in all browser.</p>
  
  <p>is there any solution regarding this?</p>