Code review comment for lp:~jkakar/txaws/silence-deprecation-warnings

Sorry for all this nonsense. I fixed the issue and also installed
python2.6 to make sure there aren't anymore. Using trial with a
non-/usr/bin/python sucks and is awesome at the same time:

python2.6 -c "from twisted.scripts.trial import run; run()" txaws
python2.7 -c "from twisted.scripts.trial import run; run()" txaws

The tests pass without deprecation warnings in both of these cases, so
I'm going to go ahead and merge.