optimize vehicles:
   cache vehicle::parts_at_relative which accounted for 50% of the delay in do_turn
   link vehicle_part to vehicle_part_info via integer index
   vehicle_part_info::has_flag takes string or int; string flags are auto added to bitmask, if their usage
      warrants such
This can be made private.
Tweaked the name and spawn rates.
Another tweak
(Hopefully) a grammar fix.
Modified glue using and plant mutagen recipes
Cleanup a bit

Got Web Weaver into player.cpp where it probably belonged.  Still
working on getting safemodeveh to actually work properly.  This code
appears to jam it in the "on" position.  Not sure whether that's a
problem with me Xing out of the process on WinXP, or if it's not saving
properly, or if there's something else messed up.
Z-9 set as clasic zombie.
player now uses onfire effect over disease, effects show up in @ screen
Fix item::is_null().
Fix tiles font loading, maybe.
Fix wincurse maybe.
Merge github.com:CleverRaven/Cataclysm-DDA into creature-rework

Conflicts:
	src/field.cpp
	src/melee.cpp
	src/ranged.cpp
add a whoosh sound to mounted NX17 one_in(100) mega-shot.
More fixage, probably.
Fixes spoon name.
Added Comestible flags to JSON_FLAGS.json

Added comestibles.
Update safemodeveh on startup

Turns out it was only updating when you load your save, rather than
checking at game start.

Still isn't loading from accessing the options menu in-game.
Added new level of inheritance between player/npcs and creatures, started work on new NPC class.
Merge branch 'creature-rework' of https://github.com/CleverRaven/Cataclysm-DDA into creature-rework