A pair of industry reports gave solar stocks a nudge early in the past week. Apparently that was all they needed. The top-ranked solar power components group far outpaced the general stock market, rising 17% through Friday, more than double the nearest industry group and far above the S&P 500's fractional gain. The prime mover was SunPower (SPWR), which slipped 6% Friday but swept ahead 44% for the week. China-based ReneSola (SOL) and the