https://bugzilla.redhat.com/show_bug.cgi?id=1210356
--- Comment #4 from Michael Schwendt (Fedora Packager Sponsors Group) bugs.micheal@gmx.net --- As fedora-review prints excerpts from the guidelines, those can be out-of-date. More relevant are the printed links to the guidelines:
https://fedoraproject.org/wiki/Packaging:LicensingGuidelines#License_Text
It's only since the last edit of that Wiki page (January 2015) that %license is mentioned in that section.
%dir %{_libdir}/lv2/drumgizmo.lv2/
Without an explicit dependency on package "lv2", directory %{_libdir}/lv2/ would be without owner:
https://fedoraproject.org/wiki/Packaging:Guidelines#File_and_Directory_Owner...
AFAIR, LV2 still is not a shared lib that would result in an automatic dependency.