LOCARNO– New titles from “The Pretenders’” Vallo Toomla and Sara Summa, director of “The Last to See Them,“ rub shoulders with Nina Menkes’ “Minotaur Rex” and scarefest “All the World Drops Dead,” from Kevin Kopacka, in a lineup of some 150 projects being brought to Locarno Pro networking and co-production forum Match Me! Shepherding them …