[kdenlive/el8] (12 commits) ...Drop older els case

Summary of changes: 374e88d... Rebuilt for removed libstdc++ symbol (#1937698) (*) b838d20... Update kdenlive to 21.04.1 (*) 9d86c81... Fix build for F33 (*) 7493d5e... Update kdenlive to 21.04.2 (*) 3350afa... Fix startup crash on Wayland (rfbz#5945) (*) 6bd4e1d... dvbgrab doesn't exists on el8: using suggests (*) 9469ad7... Update kdenlive to 21.04.3 (*) 698c043... - Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass (*) ff63e92... Update to 21.08.0 (*) d22d98c... Revert "Update to 21.08.0" (*) 671cfdf... rebuilt (*) f20e554... Drop older els case (*) (*) This commit already existed in another branch; no separate mail sent