add Exit function to DS401SlaveGui, change StopTimerLoop's arg and add TimerCleanup function in timers_win32
#ifndef TESTSLAVEGUI_H_
#define TESTSLAVEGUI_H_
extern "C"
{
#include "canfestival.h"
}
int main_can (s_BOARD SlaveBoard, char *LibraryPath);
void stop_slave ();
#endif /*TESTSLAVEGUI_H_ */