“Pirates of the Caribbean: At World’s End” has taken in $126.5 million at the domestic box office, including its early limited runs Thursday.Pic is on track to be the biggest four-day Memorial Day weekend opener ever, beating out the last pic in the “X-Men” series. Globally, “At World’s End” has taken in $205.5 million internationally, according to Disney estimates. Paramount and DreamWorks said Sunday that “Shrek the Third” made $51.3 million over the three days. Cumulative box office after the weekend is estimated to be $215.7 million. At No. 3, Sony estimates that its “Spider-Man 3” has passed a total cume of $303.3 million domestically over the weekend and $499.1 million internationally.