Adding support for displaying 'unknown' while datatype is not supported by CanFestival
usr/include/canfestival/*
usr/lib/libcanfestival.a
usr/lib/libcanfestival_unix.a
usr/share/CanFestival-3/src/*
usr/share/CanFestival-3/include/*
usr/share/CanFestival-3/drivers/*