Remove pdb
Merge pull request #361 from mattrobenolt/pdb

Remove pdb
sentry_error_handler_vows: Fix 'Sentr' -> 'Sentry' typo

This dates back to the creation of this vow in 44c432d2 (Error handler
vows. 100% covered now, 2013-03-28).
Merge pull request #363 from wking/sentr-sentry-typo

sentry_error_handler_vows: Fix 'Sentr' -> 'Sentry' typo
.travis.yml: Don't install distribute

http://python-distribute.org doesn't seem to be up anymore, which is
not surprising so long after the Distribute/Setuptools merge of
2013-06-01 [1].  This reverts 3b41da8d6 (Fix travis CI builds,
2014-02-04).

Instead, we run 'make setup' with sudo to avoid:

  $ make setup
  ...
  error: invalid command 'egg_info'

[1]: https://pythonhosted.org/setuptools/merge-faq.html#what-is-the-timeframe-of-release
vows.mongo_storage_vows: Set a server in GetNothingAfterExpiration

Avoid:

  Traceback (most recent call last):
    File "/.../pyvows/runner/gevent.py", line 104, in _run_setup_and_topic
      topic = topic_func(*topic_list)
    File "/.../vows/mongo_storage_vows.py", line 210, in topic
      storage.put(IMAGE_URL % 10, IMAGE_BYTES)
    File "/.../thumbor/storages/mongo_storage.py", line 39, in put
      if not self.context.server.security_key:
  AttributeError: 'NoneType' object has no attribute 'security_key'
Merge pull request #365 from wking/mongo-vow-get-nothing-server

vows.mongo_storage_vows: Set a server in GetNothingAfterExpiration
Merge pull request #364 from wking/remove-distribute

.travis.yml: Don't install distribute
vows.url_vows: Remove old_format reference

The argument was removed by f015a672 (Either we have unsafe or a hash,
we can't have both, 2012-07-09), which has left me with:

  $ make test
  ...
      Url vows
        Regex
          With old format

           Error in topic:
            regex() got an unexpected keyword argument 'old_format'

            Traceback (most recent call last):
              File "/.../pyvows/runner/gevent.py", line 104, in _run_setup_and_topic
                topic = topic_func(*topic_list)
              File "/.../vows/url_vows.py", line 134, in topic
                return Url.regex(old_format=True)
            TypeError: regex() got an unexpected keyword argument 'old_format'
  ...