More cleanups.

Fixed a bug with sprite drawing (tops of sprites were not drawn if scaled
larger than view screen size).

Doc updates...

Even more small formatting changes.

Removed OpenAL/OpenGL code for now.  Want to concentrate more on improving
the current code before adding extra features.

the scores actually show).

Made some functions/variables static.

Removed the unnecessary third parameters to some calls to open().

Removed some unused code.

Rewrote CAL_CarmackExpand to prevent problems with unaligned access.

Changed direct access to the Keyboard array to use a macro IN_KeyDown()
(which could one day become a function).

Although sounds sound correct in openal now...

* Save/Load

* If LastTexture is same, don't do a new glBegin (for Walls)

* A few cleanups to GL code

* Fixed OpenGL Automap (everything is now shown correctly)
* Updates to OpenGL code

* Updates to key-handling code

* Considered ideas about sound/music
* FindResource is a kinder LoadAResource2: I believe that using LoadAResource2
means that the resource exists (instead of crashing soon after loading a
bogus resource, error when attempted -- helps detects false resource forks).
FindResource will return NULL if the requested resource is not found, so the
sound/music player can check csnd then snd for the data it wants.

per second).

* Fixed topsprite in GL mode
* Tried (but failed) to fix key holding (when you win/die, you can exit the
screen too quickly)

* Fixed bug with missing textures (moved InitRenderView call to correct
place)
* Doesn't call glBindTexture if texture is the same.
* Floors are drawn the correct color (glColor3ub instead of glColor3b).
* Updated README (lots of text) and TODO

* 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