Thu Sep 27, 2012 9:10am EDT * GDP weaker than expected, jobless claims fall * China measures could support cyclical shares * Investors await Spain’s budget as riots continue * Futures up: Dow 52 pts, S&P 6.1 pts, Nasdaq 6.75 pts By Ryan Vlastelica NEW YORK, Sept 27 (Reuters) – U.S. stock index futures pared some earlier gains and were poised…