(svn r9109) [cbh] -Fix: Stabilize the reversing of trains on bridges/bridgeheads a little (it still crashes at times however). Also re-allow the construction of signals on bridgeheads

/* $Id$ */

#ifndef SOUND_COCOA_H
#define SOUND_COCOA_H

#include "../hal.h"

extern const HalSoundDriver _cocoa_sound_driver;

#endif