Bundle the FUSE2 userspace library inside the AppImage AppDir and make AppRun prefer APPDIR/usr/lib. This lets the bundled VeraCrypt binary resolve libfuse.so.2 on systems where FUSE2 userspace packages are no longer installed by default.
Name AppImage artifacts according to the GTK backend detected during the build. GTK3 builds keep the default VeraCrypt-<version>-<arch>.AppImage name, while GTK2 builds use a gtk2-legacy suffix to distinguish the legacy compatibility artifact.
Include immintrin.h in the Argon2 AVX2 implementation so GCC toolchains such as the one on CentOS 7 see the AVX2 intrinsic types when compiling with -mavx2.
Refs: https://github.com/veracrypt/VeraCrypt/issues/1595
Mounir IDRASSI
Mounir IDRASSI