Al Pacino had a “terrible” struggle with alcoholism. ‘The Godfather’ actor, 84, turned to the bottle to cope with the glare of global fame, but has been sober for decades after kicking the habit in 1977 after he began experiencing frightening blackouts following his booze binges. He has now told CBS News: “Alcohol is a depressant – like, literally it brings you down. “(My drinking) got a little worse for a while. It really was terrible. But then, eventually, thank God, it got there.” Al has spent the decades since kicking drink immersing himself in his work – and said he is now busier than eve…