Adds Kokuten's sexy Durand and Gygax sprites.

vgstation's Kokuten makes great sprites. (originally got permission for these back in the NTstation era but never got round to it, they're too damn sexy to ignore though)

Kokuten's thread (contains pics) http://ss13.undo.it/forum/viewtopic.php?f=9&t=401&sid=a007f5202a2160a782e6d10305bf4b01

DURAND:
![Mech](http://i.imgur.com/AtdDUad.gif "Durand")

DURAND-DEAD: (this gets special mention because LOOK AT IT)
![Mech](http://i.imgur.com/bquPMt6.gif "Durand-dead")

GYGAX:
![Mech](http://i.imgur.com/kS3Dyns.gif "Gygax")