Vehicle Paradrop Offset

Passengers of AircraftTypes get paradropped out if the AircraftType fires its weapon. The passengers would always use the infantry sub-cell positions for where they would be spawned, even if the passenger were not an InfantryType. This ultimately meant that vehicles would appear to fall part-way into the ground upon landing. This error no longer happens in Ares.

The same problem also used to occur with vehicles paradropped from aircraft with Carryall=yes set.

Added in version 0.1.