NPC stay allied with other characters

[pescepalla]

NPCs remain allies after death. If, after death, I start again with a fresh character in the same world, old allies will still treat my new character as a friend.

To Reproduce
Steps to reproduce the behavior:

1. Create a world and a character.
2. Become friends with an NPC.
3. Die and keep the same world.
4. Create a new character and go meet the NPC.

Expected behavior
The NPC should act as if he'd never met you. The old character died and you are interacting with him as a new character.

Versions and configuration(please complete the following information):

• OS: Arch Linux
• Game Version: 0.C.2016.03.12-1
• Graphics version: Terminal
• Mods loaded: Default

[CoroNaut]

Connected issue: #27293
Also duplicate of issue #28113