buildbot/buildbot — pull request #494 by tardyp (2012-08-14 15:25:59+00:00)
Title: Check step

CheckStep is a powerful concept that we use heavily in our complex buildbot setup in order to make sanity checks before the user creates a build.

The user can quickly fix them, without having to wait for a build slot.

This is the cleaned up version, with test and docs.