The irony of singer-songwriter Ian Hunter's career began when his band Mott the Hoople scored their most enduring hit with a 1972 glam anthem penned by a generous outsider — David Bowie's "All the Young Dudes." Leaving the group two years later, this English rocker eventually achieved American success as Yanks faithfully covered his solo catalog: Great White with "Once Bitten Twice Shy," Bar...