[avidemux/el8] (15 commits) ...Enable libvpx (rfbz#5925)

Summary of changes: 46d6de2... Rebuild for new x265 (*) f53b5d7... Mass rebuild for x264 (*) 1301877... - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass (*) ec8c002... - Rebuild for x265 (*) 11e0b4f... Rebuild for new x265 version (*) 877603b... Mass rebuild for x264 (*) c46fdc4... Update to 2.7.6. (*) 4e7c2d6... Rebuilt (*) 85c604d... - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass (*) 272f3fd... Use old cmake macro (*) 1b3f96a... Disable LTO, internal ffmpeg probably needs to be built wit (*) abffa93... Mass rebuild for x264-0.161 (*) bb709f7... - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass (*) ec56214... Fix FTBFS after mass rebuild. (*) 47500bf... Enable libvpx (rfbz#5925) (*) (*) This commit already existed in another branch; no separate mail sent