cms-sw/cmssw — pull request #5588 by rappoccio (2014-09-26 16:41:56+00:00)
Title: AK5 to AK4, re-redux

Rebasing PR #5350.

Switches AK5 to AK4, including all of the changes from @arizzi, @vadler and others. Will break the relvals until the latest GT PR is merged as well.