Merge pull request #2518 from RosettaCommons/jadolfbr/code_template_dir
Add robustness to Code Template outdir option.
More robustly fail with not using correct dir options full paths or not-quite-relative paths. Add ability to use slashes with options just in case by splitting them. We won't fail, but we also prefer lists due to complete relative paths. Should help new users as found in BootCamp.