Gunicorn

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* Add SERVER_SOFTWARE to the os.environ
* Add support for django settings environment variable
* Add support for logging configuration in Paster ini-files
* Improve arbiter notification in asynchronous workers
* Display the right error when a worker can't be used
* Fix Django support
* Fix HUP with Paster applications
* Fix readline in wsgi.input

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* Implement max-requests feature to prevent memory leaks.
* Added 'worker_exit' server hook.
* Reseed the random number generator after fork().
* Improve Eventlet worker.
* Fix Django command `run_gunicorn`.
* Fix the default proc name internal setting.
* Workaround to prevent Gevent worker to segfault on MacOSX.

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* Improve dramatically performances of Gevent and Eventlet workers
* Optimize HTTP parsing
* Drop Server and Date headers in start_response when provided.
* Fix latency issue in async workers

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* Improve gevent's workers. Add "egg:gunicorngevent_wsgi" worker using
`gevent.wsgi <http://www.gevent.org/gevent.wsgi.html>`_ and
"egg:gunicorngevent_pywsgi" worker using `gevent.pywsgi
<http://www.gevent.org/gevent.pywsgi.html>`_ .
**"egg:gunicorngevent"** using our own HTTP parser is still here and
is **recommended** for normal uses. Use the "gevent.wsgi" parser if you
need really fast connections and don't need streaming, keepalive or ssl.
* Add pre/post request hooks
* Exit more quietly
* Fix gevent dns issue

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* New HTTP parser.
* New HUP behaviour. Re-reads the configuration and then reloads all
worker processes without changing the master process id. Helpful for
code reloading and monitoring applications like supervisord and runit.
* Added a preload configuration parameter. By default, application code
is now loaded after a worker forks. This couple with the new HUP
handling can be used for dev servers to do hot code reloading. Using
the preload flag can help a bit in small memory VM's.
* Allow people to pass command line arguments to WSGI applications. See:
`examples/alt_spec.py
<http://github.com/benoitc/gunicorn/raw/master/examples/alt_spec.py>`_
* Added an example gevent reloader configuration:
`examples/example_gevent_reloader.py
<http://github.com/benoitc/gunicorn/blob/master/examples/example_gevent_reloader.py>`_.
* New gevent worker "egg:gunicorngevent2", working with gevent.wsgi.
* Internal refactoring and various bug fixes.
* New documentation website.

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* Support https via X-Forwarded-Protocol or X-Forwarded-Ssl headers
* Fix configuration
* Remove -d options which was used instead of -D for daemon.
* Fix umask in unix socket