Special case the handling of LubTypes in isSubtype. We were previously ignoring these.
Special case the handling of LubTypes in isSubtype. We were previously ignoring these.

blue-systems-group/project.maybe.polyglot,xcv58/polyglot,blue-systems-group/project.maybe.polyglot,liujed/polyglot-eclipse,xcv58/polyglot,xcv58/polyglot,liujed/polyglot-eclipse,xcv58/polyglot,blue-systems-group/project.maybe.polyglot,liujed/polyglot-eclipse,blue-systems-group/project.maybe.polyglot,liujed/polyglot-eclipse