In the 1970s, he turned scripted TV into something that felt more like America than most of the series that came before him. He gave us real families, facing real cultural, social, economic, racial, and political issues in their daily lives — and leavened it all with sharp humor. Norman Lear is one of TV’s greats, with a legacy that includes some of the most influential and groundbreaking series in television history — “All in the Family,” “Good Times,” “The Jeffersons,” “Maude,” and “Mary Hartman, Mary Hartman,” to name just a few. Your TV GPS, Globe TV critic Matthew Gilbert’s...