Veteran gossip columnist Michael Musto is in town today promoting his new book, La Dolce Musto, a collection from his columns of the same name (he’ll be at Nage Restaurant from 6:30 – 8:30 p.m.). The bespectacled provocateur has spent 20 years at the Village Voice chronicling New York City’s gay life, nightlife and sex life, sometimes in terms that would make Candace Bushnell blush. Along with the tales of club kids, politics and sex…