Actress Shirley MacLaine said in London that she and her husband Steve Parker are now separated "with a capital S." She said there are no present plans for divorce. They were married in 1954 . . . A five-officer Navy discharge board recommended that admitted homosexual Ensign Vernon E. Berg III be discharged under less than honorable conditions. Berg, 24, son of a Navy chaplain, said he would appeal. The board did not specify the type of discharge Berg should receive: