* Took code from RefSprite for GL sprite drawing (so sprite visibility is
set correctly).

the mac version caused sound areas (when doors are opened) to be added more
than once.. of course they were deleted only once, so the array overfilled
and spilled onto adjacent memory.
* Walls and sprites all draw now (except top sprite).
* Start on Automap drawing.

* Walls appear to be drawn correctly
* Moved some palette and floor clearing functions to specific draw files
* Sprites are shown -- just with wall textures.

* Initial software gtk+ version
* Stub for glx version
* Added GPL Header to all source files
* Cleaned up TODO

intermittent failures when going to gamemode).

itself, return a copy of the resource).

Updated res.c to do more work by making copies of resources and freeing the
copies when released.

Removed a few lines of unused code, etc

TODO: find where/why GameShapes (and/or the memory it is pointing to) is
getting trashed.

version's

implementing input

everything else.

added).  Unsuccessful attempts to fix glx.

(OpenAL).

headers). Renamed most VWB_ functions to VW_.