THE LEAGUE OF SUPERHEROES (a.k.a. ABCs Of Superheroes) *** U.S.A. 2015 Dir: Jens Holzheuer, Oliver Tietgen 86 mins What does Uwe Boll, Lloyd Kaufman, Fred Olen Ray, Jörg Buttgereit and Bai Ling all have in common? They all feature (albeit very briefly) in this twisted bloody ABCs of superheroes. The film…