BUG/COMPAT: test compat on Python 2.6
closes #7152

this is good 
 these are not tested on 2.6 (except on windows)...that's how I discovered...
 running on my 2.6 venv now ... weird that they would only run on windows i would think they run on the slow builds 
 oh..sorry....what I meant was that we don't test slow on anything but 1 build on travis
 looks good if it passes yours...squash and merge
