(svn r2639) -Add: Added the vehicle names in table/engines.h so that you know what line represents what vehicle (I hope I didn't mess that up). Added some comments while I'm at it and include the table/ directory in the Doxygen generation

#ifndef NAMEGEN_H
#define NAMEGEN_H

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

extern TownNameGenerator * const _town_name_generators[];

#endif