Wal-Mart profit misses forecast; outlook weak CHICAGO (Reuters) - Wal-Mart Stores Inc. on Thursday reported a weaker-than-expected profit and said second-quarter results would miss Wall Street forecasts as steep energy prices and cool, wet weather cut spring sales. Shares of Wal-Mart, which said gasoline prices would continue to curb consumer spending in the current quarter, fell 4 percent in premarket trading. The world's biggest retailer said it expects trends to improve in the second half and remained optimistic about the U.S. economy. "Our results were not up to Wal-Mart standards," Chief Executive Officer Lee Scott said on a recorded message,...