Remove setuptools from install_requires.

We already import setuptools in setup.py so its not necessary
to explicitly list it. Also, it apparently prevents users from
upgrading using distribute.

Thanks to Jannis Leidel for the report.
fix issue #141. We don't have yet an rss link.
fix issue #142. Thanks
improve content-length handling. Chunked encoding is only used when not
content-length is provided and http version >= 1.1. In other case send
until we content is empty.

Also HTTP don't expect we can send more than content-length if header is
set, so discard any content if we have already send the expected
lenghth. (spotted by @GrahamDumpleton)

reviewed and OK by @davisp. More readable function by @davisp
support bdist_rpm
fix issue #152.
Fix broken responses with missing Content-Length.

We were testing for None and using a default value of -1.
Fix broken chunked response generation.

* Transfer-Encoding header was not being set.
* Whether a connection should close should depend on whether
  we are able to continue accepting requests.
test only if clengtih is defined.
Always log exceptions during request handling.

  * Always log the exception locally
  * Still only pass the exception in the HTTP response if
    debug is turned on.
  * Slight cosmetic changes to the actual HTML of the error
    response.
Prevent exceptions from being logged twice.

  * Remove logging call in worker subclasses and rely on the
    logging in Worker.handle_error to do the proper logging.
fix ipv6 address parsing in forward address. Spotted 3 weeks ago by
Jonathan Leroy.
typo.
typo
just load environ when we load the app
Added extra WSG/HTTP classifiers for PyPI

  * We were missing some obvious classifiers for HTTP and WSGI
Fixed a couple harmless typos.

Thanks to Josh Ourisman for spotting them.
don't import django before we really need it. Should fix issue #166 .
fix issue #165. Sometimes apache don't specify the port ipv6 address are
in the form of  aaaa:aaaa:... . Thanks to zauberpony for first
implementation of the patch.
patch from @davisp, ease the code.