gl_fires/r_firecolor patch. Software client still builds and runs correctly,

but as I don't have GL at work, I have no idea if gl client still works, or if
rocket trails work (default to off). This is mostly a blind patch taking the
code from oldtree to newtree.

include/client.h

@@ -148,7 +148,8 @@ typedef struct
 	float	die;				// stop lighting after this time
 	float	decay;				// drop this each second
 	float	minlight;			// don't add when contributing less
-	float   color[3];			// Don't use alpha  --KB
+	float   _color[3];			// Don't use alpha  --KB
+	float	*color;
 } dlight_t;
 
 typedef struct