(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

?package(openttd):needs="X11" section="Games/Simulation" title="Openttd"\
command="/usr/games/openttd" icon="/usr/share/games/openttd/openttd.32.xpm"