Europe's skidding auto industry weighed down fourth-quarter earnings for a pair of automotive suppliers, TRW Automotive Holdings (TRW) and Wabco Holdings (WBC). But both beat analysts' expectations and offered somewhat rosier guidance. Wabco, which supplies braking, stability control and other systems for trucks and buses, boosted aftermarket sales. Its shares surged 5.3% intraday on the stock market today. TRW, which makes seat belts, airbags and