* 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.
