Reorganised link_container_internals.rb to emphasise that there is only one method (::Meldd::Internals::LinkContainer::build_internal_list) called from outside code; what's in ::Meldd::Internals::LinkContainerSupport is *emphatically* intended to be thought of as "sealed off" from the Outside World. Ruby provides language support for a related, useful concept (see http://stackoverflow.com/questions/14281004/what-are-tainted-objects-and-when-should-we-untaint-them) that warrants further investigation in The Future™.