Back in my day, when the beatniks and hippies of the 1960s were beginning to populate the theatrical scene of San Francisco’s Haight-Ashbury district and Chicago’s Old Town, productions bordering on the psychedelic would have drawn shouts of “far out, man” and “right on” by an enthusiastic counterculture. The Beat Generation, along with poets/novelists Allen Ginsberg and Jack Kerouac, as well as four young Brits called The Beatles, were influencing American culture.Today, a musical playing through June 1 at Porchlight …