Lengthy discussion of why this is a good thing (I didn't know) at SO:

http://stackoverflow.com/questions/2209755/python-operation-vs-is-not

These total to only ~200KB.

This repo has moved to git://github.com/floodlight/oftest.git

'make install' calls help2man, so apt-get install it beforehand.

File and command names in typewriter text.

Note: we could probably use functools.partial.

Fixes #70