Add Protracker4 (aka. Protracker IFF) player [PERFECTIVE]
origin Eagleplayer V2.06 distribution.
$VER: Protracker 4.x Eagleplayer V1.0 (18-Apr-97) Protracker4 Tom, experimental player written by Buggs of DEFECT Softworks
Example mods: https://ftp.modland.com/pub/modules/Protracker%20IFF/