This is in a separate commit just to make the changes to existing files easier to go through.
git-svn-id: https://svn.eduke32.com/eduke32@8215 1a8010ca-5511-0410-912e-c29ae57300e0
# Conflicts:
# source/audiolib/include/midi.h
# source/audiolib/src/_midi.h
# source/audiolib/src/al_midi.cpp
# source/audiolib/src/midi.cpp
# source/audiolib/src/music.cpp
# source/audiolib/src/oplmidi.cpp
# source/duke3d/src/midi.cpp
# Conflicts:
# source/audiolib/src/al_midi.cpp
# source/audiolib/src/midi.cpp
# source/audiolib/src/music.cpp
This shitcans the SDL_mixer requirement but leaves platforms other than Windows without built-in MIDI playback capability until Nuke.YKT's OPL3 emulator is merged. This also reworks sdlmusic.cpp into music_external.cpp, including an untested port of the code to Windows.
git-svn-id: https://svn.eduke32.com/eduke32@8214 1a8010ca-5511-0410-912e-c29ae57300e0
# Conflicts:
# GNUmakefile
# platform/Windows/eduke32.vcxproj
# platform/Windows/props/build_common.props
# source/audiolib/src/sdlmusic.cpp
# Conflicts:
# Common.mak
# GNUmakefile
# platform/Windows/audiolib.vcxproj
# platform/Windows/eduke32.vcxproj
# platform/Windows/eduke32.vcxproj.filters
# platform/Windows/props/build_common.props
# source/audiolib/src/driver_sdl.cpp
# source/audiolib/src/sdlmusic.cpp
# source/build/include/vfs.h
# source/build/include/winbits.h
# source/build/src/winbits.cpp
