By Denny Dyroff, Entertainment Editor, The Times Bethany Thomas Fans of classic female vocalists as well as theater patrons will both find something to their liking in Chester County starting this week – and it’s the same show. People’s Light (39 Conestoga Road, Malvern, www.peopleslight.org), currently is presenting a show that features the music of Judy Garland, Patsy Cline, Billie Holiday,...