title: LESS incorrectly importing files with URLs
body: <p>It seems that LESS' import strategy for URL doesn't account for relative paths the same as CSS does.</p>
  
  <p><code>test.less</code></p>
  
  <pre><code>@import "sub/test.less";
  div.a {
      background-image:url('imagea.jpg');
  }
  </code></pre>
  
  <p><code>sub/test.less</code></p>
  
  <pre><code>div.b {
      background-image:url('imageb.jpg');
  }
  </code></pre>
  
  <p><code>output.css</code></p>
  
  <pre><code>div.b {
      background-image:url('imageb.jpg');
  }
  div.a {
      background-image:url('imagea.jpg');
  }
  </code></pre>
  
  <p><code>correct_output.css</code></p>
  
  <pre><code>div.b {
      background-image:url('sub/imageb.jpg');
  }
  div.a {
      background-image:url('imagea.jpg');
  }
  </code></pre>
  
  <p>Is there a way to get this behavior from LessJS or is this a bug in the implementation?</p>