audio/fasttracker2: Updates to v1.34

Changes since v1.31

v1.34 - 09.09.2020
- If trying to load an XM with >32 channels or >16 samples in an instrument,
  discard the extra channels/samples and allow the loading to happen (but
  warn the user about it).
- Same as above for .XIs (instruments) with >16 samples
- Fixed a possible crash after trying to load unsupported XMs
- Fixed loading of XMs with 256 orders and/or an orderlist padded with 0xFF
  at the end.

v1.33 - 07.09.2020
- Right Shift key is now correctly used for "Record Pattern" instead of
"Record Song" (this was wrong).
- For Mac keyboards: Left Command key can now be used for "Play Pattern"
  (since some Mac keyboards don't have a Right Alt key).
  PS: You now need to use Left Ctrl (instead of Left Command) for
  "select all/copy/paste" keys in the sample editor and for marked text in
  the UI.
- Added some Mac-specific text to the "Help -> Keyboard" section

v1.32 - 05.09.2020 (updated 06.09.2020)
- Fixed crash in "Amiga frequency table" mode if period (freq) would reach 1.
  Not sure if this is even possible, but better safe than sorry...
- Fixed a small initial resampling interpolation error on looping samples
  whose loop start (Repeat) is above 0.
- Fixed a CUBIC_PHASES off-by-one typo, which could probably mess up the
  resampling interpolation in very rare cases.
- Pre-calc cubic spline LUT on init, instead of including the table in the
  binary.
- Fixed line-encoding on Linux makefiles
- Cleaned up some messy logic in tickReplayer() (behavior is the same)
>> 06.09.2020:
- Fixed a bug with playing empty patterns in v1.32

(fox)