Revert "Downgrade to setuptools 0.6c11. The latest setuptools/zc.buildout/zc.recipe.egg set does cracy things."

This reverts commit 30c822ecee4458ed9178a907474382f43c227d87.
Revert "Use the latest setuptools/zc.buildout."

This reverts commit 2e2dbbcc48336e27a8b1dc9b6369f8204f514363.

Conflicts:

	buildout.cfg
Revert "Use ZTK as version base; install six and restrictedpython as test deps. One failing test to go."

This reverts commit e080d31422d2a00756cd27551069be24d475a528.

Conflicts:

	buildout.cfg