[vlc/el7] (15 commits) ...Merge branch 'el8' into el7

Summary of changes: 341f821... Rebuild for new aom (*) f7c04b6... Revert "Rebuild for new aom" (*) 8e07320... Merge branch 'master' into el8 (*) 1712ae0... Merge branch 'master' into el8 (*) f1b47d7... Merge branch 'master' into el8 (*) 5a0504a... Merge branch 'master' into el8 (*) d4875fe... Merge branch 'master' into el8 (*) 88ad600... Merge branch 'master' into el8 (*) 7c79e49... Merge branch 'master' into el8 (*) f3fe13d... Merge branch 'master' into el8 (*) 4f292e5... Merge branch 'master' into el8 (*) 56911bd... Merge branch 'master' into el8 (*) 57a10c7... Merge branch 'master' into el8 (*) 628019f... Update to 3.0.21 (*) 1ca158e... Merge branch 'el8' into el7 (*) This commit already existed in another branch; no separate mail sent