The Giddy Thrill of “What We Do in the Shadows,” A Show About Bloodsucking and Bootlicking |

The creators of “What We Do in the Shadows” (FX), Jemaine Clement and Taika Waititi, both New Zealanders, adapt and Americanize their 2014 vampire comedy into a jolly spoof of demonic gloom. With its mockumentary conceit and its steady airing…