Let’s talk about Oscar Madison. You know, the fictional sportswriter. Cigar-smoker, beer-drinker, poker-player, buddy to Murray the Cop. Forever cranky roommate to fussbudget Felix Ungar. Oh, yes, that is the crux of the long-lived male tale born in the mind of playwright Neil Simon for the 1965 Broadway production “The Odd Couple,” with Walter Matthau…