These unicode strings prevent importing of falcon, under python 3

This is a quick and dirty work-around, and obviously sub-optimal. The best option, is if there's a way to rewrite the code in request.py so it passes syntax validation in both versions of python. Perhaps instead of using u to declare it unicode, you do it in ascii, and convert it to unicode if it's python2x? It doesn't look like there's any non ASCII characters in there.