Damn that was a pita. Pip expects that cmdclasses are the setuptools version,
and chokes in a confusing fashion when using distutils instead. See the comment
for details.

Not really sure if this will fix it or not, but installing via pip now fails
with...

  Running setup.py install for nyx ... error
    Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__=...

Damn. Installing with pip fails with an ImportError because our setup.py
imports nyx/__init__.py which in turn imports stem. As such just reading our
file instead.

Stem dynamically generates a manifest to instruct distutil what to include and
exclude. Doing the same here.

Modeling our packaging after Stem, with support for release dry-runs.

Couple recent changes need to be accounted for.

Oops. On reflection many platforms (OSX, BSD, etc) lack proc contents so we
shouldn't attempt to use them when unavailable. Otherwise the connection panel
will be delayed. Caught thanks to a report on tor-relays@.

When we don't list geoip information there's no need to reserve space for it.

We padded the source and destination with different sizes to account for
listing a locale, but that padding was inverted for inbound connections.

If you have an exit policy that allows exiting then relay connections we could
conceivably exit to are labeled as 'EXIT'. That's wrong, and would
understandably spook folks.