Collector #889 -- thanks to 'aroda' for the patch!

- Note about the change

- Make it so webdav-source server is distinguishable from the default http server in the ZMI and event.log

inet-address default, which does not make a lot of sense for binding

      - Collector #1780: DateTime.strftime() now handles dates <= 1900 or
        >= 2038

without touching sys.path and without the help of imp.

something went wrong during execution of 'function'.

- docstring cleanup
- whitespace cleanup
- import cleanup

(Thanks to Dale Hirt for the patch).

and pushed reponsibility for closing the REQUEST down to the registry.

The Finder class is now used for the complete lib/python tree and has a blacklist instead of a whitelist for file extensions.
So there should no longer be a need to update setup.py if modules or files are added or removed in lib/python.
http://www.zope.org/Collectors/Zope/1776

fixed http://www.zope.org/Collectors/Zope/1507 (Entry #17, 1.) alias http://www.zope.org/Collectors/Zope/1728

switched back to ip=self.ip, simplified and fixed prepare() code
now we are down to 1 failing test on Windows

added test for http://www.zope.org/Collectors/Zope/1507 (Entry #17, 2.) alias http://www.zope.org/Collectors/Zope/1728

now 3 tests are failing on Windows

No functional changes.

Thanks to Sidnei da Silva.