Willie Nelson is playing an active role in festivities surrounding the South By Southwest Conference.  He’ll be a guest Friday on ABC’s “Jimmy Kimmel Live,” which this week has relocated to Austin, Texas in conjunction with the music and film event.  In addition, the country legend will be performing on Thursday.  He’s set to host and headline his annual Heartbreaker Banquet festival at his Luck, Texas ranch.  Willie will cap off the entertainment on the Medicine Show Stage, which will also feature Hurray for the Riff Raff, Nikki Lane, Delta Spirit, and others.  Butch Walker leads the lineup on the Revival Tent Stage.  Other performers include Angel Olsen, Israel Nash, and Lindi Ortega.