[mpv] (20 commits) ...Fix build

Summary of changes: 8bd44a0... Bundle waf and comment out the missing BuildRequires (*) 6f1690b... Revert "Bundle waf and comment out the missing BuildRequire (*) 12dcd64... Add changes for el8 (*) 4a0e46c... Add changes for el8 (*) 0635493... Add pkgconfig(luajit) (*) 60aae16... Add pkgconfig(luajit) (*) 4449119... remove unused lua br (*) 071026b... rebase on master (*) 761a632... Make libplacebo fedora only (*) fbd4270... Merge branch 'master' into el8 (*) db62f85... Merge branch 'master' into el8 (*) cbcdb1d... Merge branch 'master' into el8 (*) 289f441... Merge branch 'master' into el8 (*) 4746231... Merge branch 'master' into el8 (*) 5bb3915... Merge branch 'master' into el8 (*) d5a73fc... Merge branch 'master' into el8 (*) 7fb7b18... Merge branch 'master' into el8 (*) f4cf0d0... Merge branch 'master' into el8 (*) b1b8d19... Merge branch 'master' into el8 (*) 2168025... Fix build (*) (*) This commit already existed in another branch; no separate mail sent