Pybeanstalk

* fix 23 (make Twisted tests nose-runnable)

* forgot fix to 21 from rc0 (remove __del__)
* multiserver test was missing from 'make test'

* reorganization at GitHub
* first-ever PyPI release
* switch to setuptools from distutils
* initial tests for Twisted client (see wiki > testing)
* several bug fixes
* abandon beanstalkd-tracking version numbering, follow PEP440

* made the poller timeout code into an debugging option (severconn._debug=True)
* moved example.py from the main beanstalk package to the examples/ directory
* renamed example.py to simple_clients.py
* removed producer.py since that functionality was handled in simple_clients
* fixed some bugs in the Job class, it should be usable now.

* changes below incorporated
* skipping 0.10.0 since 0.11.0 came out right away, and the versions are
compatable/interchangable, with the exeption of a couple of the stats. I'd
suggest that you dont rely on those stats if you may use code on both :) see
beanstalk's proto.txt for more info on that.

Apr. 19, 2008:
* Updates for 0.10/0.11 versions of beanstalkd.
* protocol changes are incorporated
* testing is expanded to cover this
* Cleanup:
* protohandler.py changed handler from a pure generator to a class. It improves
performance slightly, and more importantly makes things cleaner to read.
* removed some superfluous code from __init__.py
* better comments
* New stuff:
* examples directory. This will, over time, accrue example uses/simple cases
of using pybeanstalk
* libevent support. Added a new connection type that works with libevent and
pyevent. This connection type will only import on systems with pyevet
installed.

* new tests for everything
* added connection level support for tubes
* changed the ServerConn class to be less verbose, using __getattr__
* Implemented the 0.9 protocol
* The handler function for interactions is now a generator and the whole of
it is implemented in a continuation passing style
* Moved protohandler from a class to functions.