"By blood is pure Scots," says Guy McCrone. "Business had taken my family to Birkenhead, England, and I was born there in 1898; but I spent my early childhood running in the woods: and farmlands of central Ayrshire. This is the Burns country." It was that country that Guy McCrone described in his novels, in the three-volume bestseller RED PLUSH, in AUNT BEL, and in THE HAY-BURN FAMILY. In his new novel he still deals chiefly with Scottish types. Since the publication of his last novel, Mr. McCrone has also written a play, "Edenbrook's Daughter." It will be produced in Germany this winter, translated by the woman who has done Eugene O'Neill, Arthur Miller and Sartre. From 1956