Better doc gen linking support and honoring of pkg selection in wizard

The doc gen wizzard is a bit simplified now and true to what it advertises.

Either you can select a subset of packages, or (by default) get the whole shoot'n match documented.

Links outside of the global or packages scope will still likely fail (as in within modules.) but the linkage succeeds a bit more now as its less strict about requiring the full qualified scope.

My next step will be to fix the linkage within the module scopes.