Yesterday was another of those busy but productive days when the 'Raiders' turn up. My guests were Eric Metcalfe, Mina Totino, Monique Fouquet, Renée Van Halm, Elizabeth McIntosh and later Marlene Madison.           It was a rainy day so we ate our splendid potluck lunch inside. Al and I thank you all for Monique's home-baked quiche, cheeses, cold cuts, salads, breads…