flip tcomp axis for freetrack protocol

It's the easy way out, for now. Need to align 6DOF conventions of all
available trackers, eventually
remove hatire tracker

hatire tracker's unmaintained, unused and has an obvious crash bug

The following line:
data[frame_cnt] = (long) HAT.Code;

contains an arbitrary offset dereference.

It's obvious now that the code has only been compile-tested.

Because no one reported the issue, it's safe to assume it has no users.

If it gets users and becomes actively maintained, it'll return.

-sh