Log Message:
Updated libopenmpt to 0.2.6774.

libopenmpt 0.2-beta20 (2016-08-07)

    [Bug] PSM loader was broken on big-endian platforms since forever.
    [Bug] load.skip_samples ctl did not work for PSM16 modules.
    There is a new "subsong" ctl, which can return the currently \ 
selected subsong.
    More accurate ProTracker arpeggio wrap-around emulation.
    More accurate sample tuning in PSM16 files.
    Samples in DSM files were sometimes detuned and some pattern commands were \ 
not imported correctly.
    More accurate import of MDL 7-bit panning command.
    Only import pattern commands supported by the UltraTracker version that was \ 
used to save ULT files. Add support for command 5-C (end loop).
    DMF sample loop lengths were off by one.
    Unis 669 pan slide effect was too deep.
    Several valid (but slightly corrupted possibly due to disk failures or data \ 
transfer errors) SoundTracker files were no longer loading since libopenmpt \ 
0.2-beta18.