title: Python, PIL, crop problem
body: <p>Can't seem to get crop working correctly, problem is, it crops a region of correct dimensions, but always from top left corner (0, 0), instead of from my passed coordinates.</p>
  
  <pre><code>image = Image.open(input)
  region = image.crop((1000,400,2000,600)
  region.save(output)
  </code></pre>
  
  <p>In image.py from PIL, method _ImageCrop I've printed out.. :</p>
  
  <pre><code>print x0, y0, x1, y1
  self.__crop = x0, y0, x1, y1
  </code></pre>
  
  <p>Values seem to be correct.</p>
  
  <p>Input is a JPEG image of size 1600x2390.</p>
  
  <p>Python version: 2.5,
  PIL version: 1.1.6</p>
  
  <p>Any suggestions? Thanks</p>