Just a month before he’s set to turn 100 years old, Mel Brooks is making one hell of a birthday gift to the world: The donation of a 20,000-document archive of his works to the National Comedy Center in Jamestown, New York. Besides serving as a chronicle of Brooks’ legendary career—including 15,000 documents and 5,000 photographs—the archive’s donation means Brooks’ legacy will sit alongside that of his long-time comedy partner and friend Carl R…