“ Avengers: Infinity War ” officially smashed records for biggest box office opening ever. Though final domestic numbers won’t be confirmed until mid-Monday, its domestic total exceeded expectations for a North American launch of $258.2 million. Internationally, it secured $382.7 million for a global tally of $640.9 million. Initial projections on Sunday showed $250 million in North America, along with $380 million internationally. Those numbers easily secured Marvel’s latest title the biggest domestic and global debuts of all time. The previous domestic record-holder was “ Star Wars: The Force Awakens ,” which bowed with $248 million in 2015. “ Infinity War ” also topped “ The Fate of the Furious '” global opening record of $542 million. The international opening of $382.7 million, which doesn’t include China, represents the second-highest international debut ever. “ Fate of the Furious ” still holds the top spot with $443 million, including $185 million in China. The supe...