Milestones

BORN. To Amy Irving, 31, actress of stage (Heartbreak House), screen (Micki & Maude) and TV (The Far Pavilions), and Steven Spielberg, 37, celluloid superczar who has two new productions (The Goonies, Back to the Future) in this summer's crop of films: the unmarried couple's first child, a son; in Santa Monica, Calif. Name: Max Samuel. Weight: 7 lbs. 7 1/2 oz.