By Stephen Culp NEW YORK (Reuters) – Wall Street bounced back to a sharply higher close in light trading on Friday as investors embarked on the second half of the year ahead of the long holiday weekend. All three major U.S. stock indexes reversed early losses to end in well into positive territory in the wake of the stock market’s worst first half in decades. Still, all three indexes posted losses for the week. “We’re headed into the holiday weekend and having a late-day relief rally,” said Joseph Sroka, chief investment officer at NovaPoint in Atlanta. “But we’ll likely have to wait until inv…