- replace a few constant values with GL macros in tr_cmds.c

- tidy up top of tr_types.h a bit, change flags to hex representation
- make ROM cvar enforcing really work
- remove cg_stereoSeparation from cgame as it is obsolete.
- Add CG_DrawCrosshair3D so people see crosshair correctly when stereoseparation is enabled

code/renderer/tr_cmds.c

@@ -319,9 +319,9 @@ void R_SetColorMode(GLboolean *rgba, stereoFrame_t stereoFrame, int colormode)
 		rgba[0] = GL_FALSE;
 		
 		if(colormode == MODE_RED_BLUE)
-			rgba[1] = 0;
+			rgba[1] = GL_FALSE;
 		else if(colormode == MODE_RED_GREEN)
-			rgba[2] = 0;
+			rgba[2] = GL_FALSE;
 	}
 }