ValveSoftware/steam-for-linux — pull request #1108 by bootkiller (2013-01-31 17:32:59+00:00)
Title: Updated Catalyst for older cards from 12.6 to 13.1

Updated Catalyst for older cards from 12.6 to 13.1 and added "Legacy" in front for clarification. The Catalyst 13.1 legacy driver also supports the the necessary extensions for Team Fortress 2 so it should be the recommended driver.