“My Life on a Diet”

By EDWARD RUBIN Most famous people long in the tooth, if they are not dead, quietly retired, or resting on their well-earned laurels, tend to keep a very low profile. You rarely even hear about them. But not the indefatigable 85-year- old Renée Taylor, an Energizer bunny whose funny and bittersweet autobiographical one-woman-show, My Life On…