fixed classpath routing for lenskit train test evaluations using disc cached recommender components see bug #518
Made changes in response to pull request.
Merge branch 'feature/kluver-518-classloaderRouting' of https://github.com/kluver/lenskit into feature/kluver-518-classloaderRouting
Merge branch 'feature/kluver-518-classloaderRouting'