Warzone 2100 Graphic Mods tools

Changing research model to one that is more modern looking plus textures

Commit 3DS export.

A few minor changes

The start of a WZGM Changelog.
just stubs for now. feel free to add/edit

Commit OBJ export. :)

Release checklist.

create tags/exp_0.50 from branches/berg-exp

Set up build system with proper params for WZGM project. (if not proper,
at least better)

Set config dir to .warzone2100-wzgm-exp or "Warzone 2100 WZGM-Exp"
depending on platform.

Update: wzencode.py checks for presence of audio files.
added more details to movie_tools/README.

Crushing Textures