By Rusty Marks Online audience reviews of Harry Connick Jr.'s concerts are almost invariably negative, talking about phoned-in performances, not enough singing, late starts and short shows.Either Connick has seriously ramped up his game in recent months, or those folks are clueless about what the New Orleans-grounded jazz musician is trying to do.Connick played to a sold-out house at Charleston's Clay Center on Thursday, and put on a raucous and entertaining show.The musician took the stage at 7:30 p.m.