except .. as ..

Add support for Tox (http://tox.testrun.org/) and Travis CI (http://about.travis-ci.org/)

Remove compile directory if it exists before downloading source

Fix annoying behavior where, after a failed compilation, it is needed to run buildout to have the compile-directory removed but have an error message, then run it again to try to compile again.

Add tox.ini for Tox (http://tox.testrun.org). MANIFEST.in also required to make sure all needed docs and tests get into the sdist.