Since Python 2.7 is the minimum version supported,
collections.OrderedDict is guaranteed to exist and there is no need to
reimplement it.

They can be found through autopep8 (W690) or python-modernize.
Variables manually renamed.

This is because Python 3 does not support tuple unpacking:
http://legacy.python.org/dev/peps/pep-3113/

Change every mention of MAINTAINER to avoid future issues.

And fix some PEP8 style issues (mostly about spaces) while I was there.

refs #806