Gwen Ifill, the veteran journalist and newscaster who co-hosted PBS NewsHour, has died, her close friend Michele Norris confirmed on Monday. Ifill, 61, had been battling cancer. PBS said in a statement that she died Monday "surrounded. "Complaints of a Dutiful Daughter" PBS, "P.O.V." Coverage of a Single Breaking News Story in a Regularly Scheduled Newscast "Coverage of Rabin Funeral" CBS, "CBS Evening News" "V-E Day" ABC, "World News Tonight"…