[Distutils] virtualenv python3 port

[Sridhar Ratnakumar]

I would like to help with virtualenv Python 3 port. http://bitbucket.org/brandon/virtualenv3/ seems to be outdated (not in sync with core) and thus buggy. Does not even actually use Distribute as claimed.

Brandon, would you be interested in merging and making a release if I provide a patch? Should I work on a separate branch or directly on yours? I intend to sync with the core, retaining 2to3 changes.

-srid