Currently all it contains are the MIDI sources and the MIDI devices, the rest needs to be reworked first.
# Conflicts:
# libraries/zmusic/i_module.cpp
# libraries/zmusic/i_module.h
# src/CMakeLists.txt
# src/i_module.cpp
# src/i_module.h
# src/sound/music/midi_cvars.cpp
# src/utility/i_module.cpp
# src/utility/i_module.h
# Conflicts:
# src/CMakeLists.txt
# src/sound/musicformats/music_opl.cpp
They were already clean of unwanted external references, but including this file made it hard to keep it that way.
This also moves a few useful definitions around to less 'dirty' headers.
# Conflicts:
# src/rendering/swrenderer/textures/warptexture.cpp
# Conflicts:
# src/doomtype.h
# src/sound/midisources/midisource.cpp
# src/sound/midisources/midisource_smf.cpp
# src/sound/midisources/midisource_xmi.cpp
