Turn tracing into callbacks for each syntax element, with default
callbacks to match current trace_headers behaviour for debug. Move
the construction of bit strings into the trace callback, which
simplifies all of the read and write functions.
Signed-off-by: Fei Wang <fei.w.wang@intel.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Announced in 14040a1d913794d9a3fd6406a6d8c2f0e37e0062.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: James Almer <jamrial@gmail.com>
