Vehicles now spawn in more interesting ways.
submaps now store temperature
Fix debug vehicle spawn from attempting to board if the vehicle wasn't created.
Add a new directory lang/incoming for incoming translations.
Submap temp code, including DEBUG
Ice lab temps are now set through their submap
Update lang/merge_po.sh to also import translations from lang/incoming.
Add empty translation file for Italian (lang/po/it.po).
Add new Chinese (Traditional) translation file (lang/po/zh_TW.po).
Import translations from launchpad.
Don't perform checks on .po files when compiling to .mo, just do it.
I18n for terrain and furniture names.
I18n for direction names.
Added set_temperature function for submaps
Cleaning up some code
Cars that spawn inside each other now get fused into a single 'Wreckage' vehicle.
Fixed craziness at submap boundaries, and wrong submap deletion.
Better check for vehicles spawning in water.
Merge i18n update.
Merge vehicle spawning refactor and per-submap temperature adjustments.