Log Message:
fasttracker2: update to b161

Changes since b160

Beta #161 - 04.07.2019
- Bugfix: If you held down a sample data loop pin while a system request was
  about to be shown, the loop pins would act strange lateron.
- Bugfix: Fixed a MIDI-related memory leak when pressing "Load \ 
config." in the
  Config screen.
- Bugfix: The palette editor scrollbar thumbs would not draw properly when
  dragging them.
- Bugfix: Attempting to sample in stereo (Smp. Ed.) at the last sample slot
  would result in a crash.
- Bugfix: Using keyboard shortcuts to interact with a system request/message
  could trigger an unwanted "note key up" event after the box closed. \ 
(déjà vu)
- The palette editor is now rewritten to behave exactly like original FT2
- Code cleanup
- Updated src\gfxdata\bmp\readme.txt