How familiar moviegoers might be with “Les Pieds Nickelés” or comté cheese will depend on their level of Francophilia. The latter is likely better known to Americans than the former, a comic strip started in 1908 by Louis Forton revolving around a trio of ne’er do well brothers. Dairy products and slackerdom also figure significantly in Louise Courvoisier’s debut feature, “Holy Cow.”