TOKYO (Reuters) - Asian stocks rallied to a seven-week high on Friday, buoyed by gains in U.S. technology firms as pockets of strength in corporate earnings eased some of the anxiety over a slowing global economy. Spreadbetters expected European stocks to open slightly higher, with Britain's FTSE adding 0.2 percent, Germany's DAX gaining 0.6 percent and France's CAC advancing 0.45 percent.The euro hovered near a six-week low versus the dollar following dovish-sounding comments from European..