Name the monster that interrupts construction.
Automatically turn engines on and off when appropriate.
3 new zombie dog specials
Fixes.
Typoes.
Fix
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
Tweaked the name and spawn rates.
Another tweak
(Hopefully) a grammar fix.
Modified glue using and plant mutagen recipes
Z-9 set as clasic zombie.
Add more optional VPFLAG_s and make use of em
remove unused relative_parts test alternative
const-refify map && veh has_flag(string) functions
Merge remote-tracking branch 'origin/master' into wtf_vehicle

Conflicts:
	src/map.cpp
Don't remove parts that aren't there.
Removes biollante bud as alternative to superglue and makes it one of possible components to its recipe instead.
Reverts the commacaust.
static const to const static since I benchmarked the latter