mkvirtualenv and other commands cannot be invoked non-interactively

[LeoRochael]

All virtualenvwrapper initialization lives inside:

"/etc/bash_completion.d/virtualenvwrapper"

This means the virtualenvwrapper functions cannot be invoked non interactively. I.e.:

$ /bin/bash -lc "mkvirtualenv foo"
/bin/bash: mkvirtualenv: command not found

Please break out the non-completion portions of that file into:

"/etc/profile.d/virtualenvwrapper"