And more local music news...by D.X. Ferris...Happy Dogs: The Happy Dog has new owners. Eric Williams — owner of Mexican restaurant Momocho in Ohio City — has partnered with owners Rini McNulty and Sean Kilbane to tweak the near-west-side island of retro at 5801 Detroit Ave. "The focus will be on creating a cool corner bar that continues to have live music from both local and national musicians," says Williams. The bar is re-dedicating its jukebox to indie rock and plans to host local bands like…