Forgiven transgressions Wilco front man Jeff Tweedy negotiates with Austin audience By Michael Hoinski SPECIAL TO THE AMERICAN-STATESMAN Wednesday, January 24, 2007 Jeff Tweedy can do no wrong. Despite berating chatty concertgoers (see the documentary "Sunken Treasure") and slugging an overzealous fan who jumped onstage for what seemed an innocent hug (see YouTube), the Wilco frontman still sold out Tuesday and Wednesday nights at Hogg Auditorium. Didactic, hostile, off-putting Tweedy? Or goofy, lovable, revered Tweedy? That was the question opening night. The answer? A lot of bot