[xine-lib/f30] (32 commits) ...1.2.10

Summary of changes: 53dc45d... Update snapshot (*) fa8cffc... Add script to make a snapshot (*) 1e8c3f3... Enable EGL support (*) fd0714d... Enable mpeg2 encoding support for dxr3 (*) 023798a... Don't glob soname (*) d3175d6... Clean up and sort BuildRequires (*) fa50d58... Enable fontconfig support (*) 637984b... No NFS support on EL6 (*) b4edd67... Add patch to revert gettext version bump on EL6 (*) 9f817f0... No wayland nor openssl support on EL6 (*) 42d1a5a... New snapshot (*) 1674a24... Remove now unneeded 32 bits build fix (*) c1fb769... Cosmetic spec cleanup (*) 83f1ffd... Remove unneeded SDL build flags setting (*) 294be32... Rebuild for new ffmpeg version (*) 1c7f3de... Rebuild for aom SONAME bump (*) 6bbe35f... Remove xvmc files (*) 51c72b8... Fix typo from 1c7f3de (*) 0f881d0... New snapshot (*) 5c613af... Enable libpng based video decoder (*) a840425... Add version to BR: where relevant (*) d3601fd... Conditionally add XvMC support back (*) 10afe2f... Enable libdav1d based video decoder (F31+) (*) 51fad32... Rework features enablement (*) 6a24a42... Disable currently missing features on EL8 (*) 5f99825... Fix 32 bits build (*) 50fc131... Rebuild for new libnfs version (*) 0edd97f... Adjust el8 build requires (*) c18edbf... Rebuild for dav1d SONAME bump (*) 6fa1d6d... rebuild for libdvdread ABI bump (*) 023b180... Enable aom for EL7 and libcaca and ImageMagick for EL8 (*) d7b210e... 1.2.10 (*) (*) This commit already existed in another branch; no separate mail sent