**_A masked slasher roams the sticks of Hudson Valley_** Two sisters and their beaus, as well as a male friend, venture to the backwaters north of the Big Apple for a retreat. A questionable yokel is building a yacht for one of the guys while a manly lumberjack is hanging about. The weekend takes a grim turn when someone in a fright mask starts slaying people. Made in 1976 but not released until 1979 (and later in countries outside America), “Savage Weekend” is a slasher Indie that only cost $58,000, predating "Halloween” by a year (which was made in 1977). Speaking of which, people…