- 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.
