test5

Mingw-w64 build, for Windows.
march=x86-64-v3 (previously unset)

20240226:
FFmpeg/FFmpeg@a3ca4be
videolan/dav1d@9d57a65
webmproject/libvpx@5433b94
libjxl/libjxl@bf2b765 (can't show animated frames after the first one)
mpeg5/xevd@418ed6d (don't expect it to work well)
Native VVC decoder supports IBC now, it's now quite usable, although speed is roughly half of the VVdeC's (single thread on Zen 4 CPU, with ffmpeg.exe and vvdecapp.exe)

20240227:
merged some FFMS/ffms2 code
FFmpeg/FFmpeg@9d7d03e
videolan/dav1d@8c20919
webmproject/libvpx@2bc1012
libjxl/libjxl@5c75066
mpeg5/xevd@418ed6d

20240229:
merged code again
FFmpeg/FFmpeg@194414f
videolan/dav1d@85a1035
webmproject/libvpx@d4959f9
libjxl/libjxl@cae805d
Yeah, no xevd

20240320:
merged upstream
FFmpeg/FFmpeg@5ff0eb3
videolan/dav1d@8e08426
webmproject/libvpx@6e879c6
libjxl/libjxl@d57e470
mpeg5/xevd@6fee4bb
Reverted the vvc decoder experimental mark commit.