TODO:

check if BUILDLINK_API_DEPENDS.libslirp in buildlink3.mk needs updating
check if users of the library work with the updated version:

    ./emulators/dosbox-staging/options.mk:.  include "../../net/libslirp/buildlink3.mk"
    ./emulators/dosbox-x/Makefile:.include "../../net/libslirp/buildlink3.mk"
    ./emulators/nono/Makefile:.include "../../net/libslirp/buildlink3.mk"
    ./emulators/qemu/Makefile:.include "../../net/libslirp/buildlink3.mk"
    ./emulators/qemu7/Makefile:.include "../../net/libslirp/buildlink3.mk"

