A script for cloning a non-relocatable Python virtual environment.
Virtualenv provides a way to make a virtual environment relocatable which could
then be copied as we wanted. However, making a virtualenv relocatable this way
breaks the no-site-packages isolation of the virtualenv as well as other
aspects that come with relative paths and '/usr/bin/env' shebangs that may be
undesirable. Also, the '.pth' and '.egg-link' rewriting doesn't seem to work as
intended.
Virtualenv-clone attempts to overcome these issues and provide a way to easily
clone an existing virtualenv.
