title: Decoder JPEG not available error when following Django photo app tutorial
body: <p>I am following a Django tutorial that involves image uploading, and have run into this problem. I tried installing and reinstalling PIL, libjpeg, and libfreetype6 several times, but nothing so far seems to be working. I have spent several hours trying to find a solution, and am very frustrated at this point. Please help.</p>
  
  <p>Here is the result of selftest.py after I reinstall PIL on my mac:</p>
  
  <pre><code>PIL 1.1.6 BUILD SUMMARY
  --------------------------------------------------------------------
  version       1.1.6
  platform      darwin 2.7.3 (v2.7.3:70274d53c1dd, Apr  9 2012, 20:52:43)
                [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]
  --------------------------------------------------------------------
  --- TKINTER support ok
  *** JPEG support not available
  --- ZLIB (PNG/ZIP) support ok
  *** FREETYPE2 support not available
  --------------------------------------------------------------------
  To add a missing option, make sure you have the required
  library, and set the corresponding ROOT variable in the
  setup.py script.
  
  To check the build, run the selftest.py script.
  rrdhcp-10-32-44-157:Imaging-1.1.6 pfg$ python selftest.py
  *****************************************************************
  Failure in example: _info(Image.open("Images/lena.jpg"))
  from line #24 of selftest.testimage
  Exception raised:
  Traceback (most recent call last):
    File "./doctest.py", line 499, in _run_examples_inner
      exec compile(source, "&lt;string&gt;", "single") in globs
    File "&lt;string&gt;", line 1, in &lt;module&gt;
    File "./selftest.py", line 22, in _info
      im.load()
    File "PIL/ImageFile.py", line 180, in load
      d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
    File "PIL/Image.py", line 375, in _getdecoder
      raise IOError("decoder %s not available" % decoder_name)
  IOError: decoder jpeg not available
  1 items had failures:
     1 of  57 in selftest.testimage
  ***Test Failed*** 1 failures.
  *** 1 tests of 57 failed.
  </code></pre>