Log Message:
audio/fasttracker2: Update to v1.08

Changes since v1.07:

v1.08 - 08.02.2020
- Critical bugfix: Saved instruments (.xi) would end up being broken!
- Linux bugfix: Loading a song by passing it to the executable's argument from a
  terminal wouldn't work in most cases...
- macOS/Linux bugfix: Don't show ".." directory when you are in root
- Code fix: We don't want our main instrument/sample structs to be packed, only
  the ones used during saving/loading of songs/instruments. This doesn't change
  the behavior of the FT2 clone, but it prevents unaligned pointer access in the
  replayer and other routines.
- Small optimizations to pattern data rendering, those routines are quite slow!
- Updated HOW-TO-COMPILE.txt