(svn r8840) -Fix

Remove FIFO and Stack. They have never been used and could not be used anyway because the declarations of some functions are spelled different than the definitions they should correspond to.
Also remove some other unused helpers and related struct attributes.

/* $Id$ */

#ifndef NAMEGEN_H
#define NAMEGEN_H

typedef byte TownNameGenerator(char *buf, uint32 seed, const char *last);

extern TownNameGenerator * const _town_name_generators[];

#endif /* NAMEGEN_H */