TheDarklingWolf/Cataclysm-DDA — pull request #1023 by atomicdryad (2013-05-15 09:27:59+00:00)
Title: Dropping stuff into a vehicle container will add charges instead of adding a new item, if applicable.

IE, before: drop 9mm (50) + drop 9mm (100) = 9mm (50) & 9mm (100)
after: drop 9mm (50) + drop 9mm (100) = 9mm (150)
just like inventory. Only ammo / charges, not stacks.