LOS ANGELES, Aug. 13 (UPI) -- Red Sonja , in theaters Friday, does not boast the resources major studios devote to their intellectual property. Nevertheless, its devotion to the source material and commitment to delivering to the best of its ability makes it more engaging than much of the competition. Based on the character by Conan the Barbarian creator Robert E. Howard, Sonja (Matilda Lutz) is a warrior who believes she is the sole survivor of her tribe. When Sonja pursues some poachers, she