Hints of new capital spending in 2013 and signs of a Q4 revenue rebound will draw particular attention this earnings season as companies look beyond last year's fiscal uncertainty at home and economic gloom abroad. S&P 500 companies should report a 2.7% earnings rise in Q4 vs. a year earlier, according to analysts as of Tuesday morning, Thomson Reuters said. That's up from Q3's scant 0.1% gain. Lawmakers have yet to reach deals on