While pointless (since it adds no additional protection), I don't think this avoids this code from being integrating into larges BSD codebases, since this restr

While pointless (since it adds no additional protection), I don't think this avoids this code from being integrating into larges BSD codebases, since this restriction would only apply to this file, and not affect the rest of the codebase (nor would that code's it's license affect this code).