- fixed gus emulation not working with DMXGUS and DMXGUSC lump
- gus_patchdir and/or ULTRADIR variable can be used to load custom gus patches together with main patches set with midi_config (not required when using DMXGUS(C) lump configuration)
- gus_patchdir and ULTRADIR variable can be used with both DMXGUS and timidity configuration when using GUS emulation
- fixed wildmidi emulation not working with collection of gus patches (resource files)
- removed sf2 files from midi_config items for gus emulation (when using sf2 with gus emulation the sound is distorted), only resource files will be listed to be used with gus emulation.
- removed the `already loaded` check from timidity setup in order to recreate the reader even when changing the gus memory.
1. No longer excludes builtin MIDI passthrough ports.
2. "GZDoom" references changed to "ZMusic Program".
3. No longer bugs out when MIDI playback is paused.
Different volume models were means louder or quiter sounding of the rest of notes in the song. And to avoid the mess between volume models, let's use different gain factor for each volume model?
If the same global variable is used by executable that linked to ZMusic dynamic library, both definitions may clash
For example, Linux builds of GZDoom and Raze could crash on exit because of double free, std::string destructor was called twice on the same module_progdir variable
