buildbot/buildbot — pull request #521 by tardyp (2012-09-11 17:16:21+00:00)
Title: trigger: deprecate copy_property

Same functionality can be implemented with renderable set_property

We change the implementation to rather use set_property

This has the slight side effect of loosing the source inheritance
information.

I think this is worth the simplification of API.

The doc is not updated becuse it will clash with tom's interpolate doc