[lightspark/f35] (4 commits) ...Fix build with ffmpeg 4.5
Summary of changes:
5b09673... Update to 0.8.5 (*)
e4df745... Rebuilt for new ffmpeg snapshot (*)
15c93c6... Fix build for EL7 (gcc 4.8) (*)
9a67f54... Fix build with ffmpeg 4.5 (*)
(*) This commit already existed in another branch; no separate mail sent