Update more HWPs: Knockball, Racer, Construction Mode
Changes:
- New ammo icon for Knockball's baseball bat with ball
- New ammo icon for waypoint placement tool in Racer
- Remove airplane cursor in Racer and Construction Mode
#ifndef _SDLname_h_
#define _SDLname_h_
#if defined(__STDC__) || defined(__cplusplus)
#define NeedFunctionPrototypes 1
#endif
#define SDL_NAME(X) SDL_##X
#endif /* _SDLname_h_ */