Actress-singer Julie London, 74, who had a Top 10 hit in the ’50s with her sultry rendition “Cry Me a River” and who also appeared on her ex-husband Jack Webb’s TV show “Emergency!,” died in Southern California yesterday. She was later married to musician Bobby Troupe, who played a doctor on the ’70s TV series. She had reportedly been in declining health since suffering a stroke five years ago . . . Movie producer Walter Shenson, 81, who first brought the Beatles to the screen in 1964’s “A Hard Day’s Night” and then went on to produce their next film, 1965’s “Help!,” died Tuesday at the Motion Picture and Television Fund Hospital in California. Before producing, Shenson was a publicist, and handled PR for such stars as Frank Sinatra, Rita Hayworth and Kim Novak.