[openmw/f32] (8 commits) ...Fix unit test issues on non-x86 architectures.

Summary of changes: ffc1e08... - Rebuild for ffmpeg-4.3 git (*) 7a048c2... Rebuilt for Boost 1.73 (*) 7263392... Update to latest upstraem release, 0.46.0. (*) 487cb3a... - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass (*) 9fc3c92... Improve compatibility with new CMake macro (*) 0b1afb9... Disable LTO for ppc64 and use metainfo macro (*) 599c2e7... Fix armv7hl build issue with 0.46.0 (*) ff1d569... Fix unit test issues on non-x86 architectures. (*) (*) This commit already existed in another branch; no separate mail sent