Mac OS X work...lots of little changes that touch a lot of random places.

Still work to be done, but this at least matches the PowerPC Linux status
 now.

MacOS-specific directory (and XCode project) is gone...this now uses SDL,
 OpenAL, and the Unix Makefiles.

--ryan.

code/renderer/tr_curve.c

@@ -113,7 +113,7 @@ static void MakeMeshNormals( int width, int height, drawVert_t ctrl[MAX_GRID_SIZ
 	int		i, j, k, dist;
 	vec3_t	normal;
 	vec3_t	sum;
-	int		count;
+	int		count = 0;
 	vec3_t	base;
 	vec3_t	delta;
 	int		x, y;