Include GUS patches into release package

[JNechaevsky]

I've got requests from several people, asking me about how to enable GUS synth and what actually it is, and later - why it's sounds bad.

The major problem here: not everyone familiar with patches installation and setting them up, and needles to say, applying GUS fixes. Another problem is, Choco setup automatically detects patches from Steam version of Doom, which are in fact sound like native MIDI.

I want to include GUS patches into release package as well as DMXGUS fixes, to make everyone, including myself, happy. GUS music is neat, and it's a part of port's functional, which I want to be available w/o extra unnecessary headache.

Technically, I need to rename gus_patch_path to gus_patch_pathes and set it to base/gus_patches by default, DMXGUS can be autoloaded along with RD resource PWADs.

[JNechaevsky]

Resources to be included:

• Gravis Ultrasound patches (dgguspat.zip).

  • Created by Advanced Gravis Computer Technology, Ltd
  • Provided by Simon Howard (fraggle)

• Doom DMXGUS - DMXGUS Gonna Give it to Ya (gusgonna.zip)

  • Created by Simon Howard (fraggle)
  • Must contain «Contributors to the Freedoom project» copyright

• Heretic DMXGUS - (ht_gus1m.zip)

  • Created by Tom Klok

• Hexen DMXGUS

  • Created by Colin Caird, already included into HEXEN.WAD

[JNechaevsky]

All done. Hexen already have specific DMXGUS inside HEXEN.WAD, created by Colin Caird.