HELPING tens of thousands to KEEP HOUSE Keeping the pantry supplied has been a harassing job these last few years. We've done our best to make it easier for tens of thousands of Self Help shoppers to keep house. When things have been hard to get, we've suggested others. When certain foods have been short, we've shown Self Help Shoppers how to eke them out. Every week, at every season of the year, there's a display of the groceries you need. Every week there are timely specials. And, despite eve…