(Paydirt is a new weekly column that riffs on the biggest NYC real estate news of the moment, providing analysis and historical context on the deals and players that make this town tick.) Hindu mythology tells of a demon giant, Kumbhakarna, who’d sleep for six months at a stretch. When he’d awaken, he’d devour everything in sight. Since 421a expired in January, Gov. Andrew Cuomo, save for the occasional statement on unions, has been asleep.