#35 Player corpse shirt & pants colors bugfix

[Marko Permanto]

GLQuake introduced a bug with player corpses always showing the default ranger colors, so I've restored this feature that used to work in WinQuake (and probably DOSQuake).

This patch fixes the corpse colors specifically, but the way WinQuake works is more flexible which would allow any model to use the colors a certain player has selected, but that's a more significant change which requires creating and freeing new textures.

[Marko Permanto]

I got recommendations in the Quake Mapping discord to create a pull request on github instead so this is now available there as well

[Ozkan Sezer]

Closing after discussion at https://github.com/sezero/quakespasm/pull/71