Mounted Weapon for Vehicle/Drone uses wrong skills/stats for dice pool

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What steps will reproduce the problem?
1. Human. Set Agility to 6, Logic to 3, Pistols to 1, Gunnery to 2
2. Add Vehicle > MCT-Nissan Roto-drone
3. Right click Roto-drone > Add Modification > Weapon Mount
4. Right click Weapon Mount > Weapons > Add Weapon > Ares Predator V
5. Right click Roto-drone > Gear > Add Gear > Autosoft Rating 5

What is the expected output? What do you see instead?
There are lots of things that are not being properly reflected. The main issue 
is that the dice pool for the mounted Ares Predator V is using AGILITY + 
PISTOLS instead of AGILITY + GUNNERY

So here all the relevant rules that are missing:
Vehicle mounted guns can be operated by four different dice pools.

MANUAL MOUNT OPERATION or COMMAND DEVICE: GUNNERY + AGILITY [ACCURACY]
COMMAND DEVICE and SENSORS: GUNNERY + LOGIC [SENSOR]
DOG BRAIN via send message: TARGETING AUTOSOFT (GUN) + VEHICLE PILOT [ACCURACY]
DOG BRAIN and SENSORS via send message: TARGETING AUTOSOFT (WEAPON) + VEHICLE 
PILOT [SENSOR]

A rigger uses either of the first two options while dived. The rules aren't 
different for them, except they get all their rigger bonuses to limits and 
what-not.

What version of the product are you using? On what operating system?
Chummer5 Version 0.0.5.139 on Windows 7.

Please provide any additional information below.

If you are only going to show a single dice pool, I'd seriously think about 
only showing the drone's dice pools.
TARGETING AUTOSOFT (WEAPON) + VEHICLE PILOT [ACCURACY] 
If a gun is mounted, I'd look at the vehicle for a "Autosoft" added with 
description that contains "targeting" and the gun name, matching exactly, 
individually. If both matches succeed then use those stats, otherwise show a 
dice pool of 0. Because if a guy is going to operate it, it's the same dice 
pool no matter the gun, because it's based off gunnery, not the individual 
weapon skill.

Original issue reported on code.google.com by Brad.J.L...@gmail.com on 18 Dec 2014 at 12:17