Message 83965 - Python tracker

The patch looks fine to me. Some documentation is missing, still:
is_tracked needs to be documented in the regular documentation, and
SHOW_TRACK_COUNT should be documented in SpecialBuilds.txt.

I'm not sure whether you actually want to integrate SHOW_TRACK_COUNT
into the code base. If yes, it should be cleaned up a little. There
should be no default #undef for it, and, IMO, it should count tuples, too.