Pyflakes cleanup

Review Request #81 — Created June 18, 2007 and submitted — Latest diff uploaded


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A bunch of pyflakes cleanup.

I think there are several bugs fixed here (mostly typos).
It would be very cool to come up with a way that pyflakes could be run as part of ' test', so that the source could be kept clean, but I didn't think of an easy way to do that yet.
test suite still passes.
some of the bugs here would have been found if the code had ever been run.