After spending most of Friday flat or down, stocks rallied at the last minute and closed slightly higher, just enough to post new record highs for the Dow and S&P 500. The gains were tiny. And the new record doesn’t mean much for investors, who hardly had any more money than they did a day earlier. But it is a sign that investors believe the market’s rally this year may not be over yet. Investors will get a lot more information in the coming week, when key reports on inflation and retail sales are due. The pace of earnings reports will also pick up with results due from the remaining big banks, GE, Intel, Microsoft, and other industry bellwethers.