The newly christened Nowlin Room in the Zach Theatre complex plays multiple roles: rehearsal room, performance space, classroom and — naturally — special events space. (Never enough of them in Austin.) Tuesday night the former bicycle shop just to the east of Zach’s offices and Whisenhunt Arena Stage was decked with holiday bunting. Not quite the visual saturation of “Rockin’ Christmas Party” or “The Santaland Diaries,” but a scenic arrangement worthy of a holiday bash for backers, artists and a few other invited guests. Tony Johnson and Suzan-Lori Parks Independent publicist Brenda Thompson and Texas Book Festival’s Clay Smith filled me ...