Yelp/mrjob — pull request #574 by davidmarin (2012-10-28 00:31:32+00:00)
Title: Jobconf in steps

`jobconf` can now be set on a per-step basis; this is respected by `hadoop` and `emr` modes.

This is just the first step. I think it'd make sense to put hadoop input/output format and partitioner into steps as well, but that's a larger refactor.