Newer versions of virtualenv lack the --no-site-packages option, so I
had to remove it to keep the release.sh script working. I read that this
option has already been the default for a long time, so removing it
shouldn't chany any behavior.
For the setup.py script, I was getting some errors about the bdist_wheel
argument to setup.py, but I was able to fix that by adding 'wheel' to
setup_requires.
* Add several fixes for python toolchain
* Fix versin regex
* Make script exit on error
* Fix version regex
* Fix version regex
* Fix version regex
* Fix version regex
* Make test run on the current commit
* Fix test
* Fix test
* Use git to retrieve current commit
* Fix tests
* Fix tests
* Also make linux and mac work on the current commit
* Fix test
Otherwise, pip complains "cannot find a version satisfies the
requirement." I suspect it was due to caching issues. I usued to
manually add a `sleep 30` between the upload and the installation test
which is quite unstable.
