By Jethro Nededog LOS ANGELES (TheWrap.com) – Starz and producers Sony Television have added a pair of Scottish actors to its upcoming film-to-TV adaptation, "Outlander." Graham McTavish ("The Hobbit: An Unexpected Journey," "24") will play Dougal MacKenzie and Gary Lewis ("Billy Elliot," "Gangs of New York") will play Colum MacKenzie. Based on Diana Gabaldon's best-selling books, "Outlander" follows the story of Claire Randall, a married combat nurse from 1945 who is mysteriously swept back in time to 1743, where she is immediately thrown into an unknown world where her life is threatened. …