audio/fasttracker2: Update to 1.79

Changes since v1.77.1

v1.79 - 18.03.2024
- Fullscreen mode code has been refactored, as I apparently had coded it the
  wrong way. "Stretched" mode always fills the whole screen now too, and other
  issues may have been fixed as well.

v1.78 - 17.03.2024
- Fixed: It was possible to deadlock the tracker by attempting to load samples
  that had a filesize of zero bytes, or if the sample was in use by another
  program.
- Fullscreen mode has received more bugfixes. Hopefully it should be better
  now. Please note that the "stretched" mode does not fill the entire screen
  in many cases. The mouse pixel mapping can also be off on some Linux systems.

(fox)