[1.05b15.2] minors capture buildings without war

[bvoid]

I'm sure everyone has observed this issue.

Minors can take your stuff, but you can't take it back without declaring war. This feels wrong!

It can be especially nasty in certain situations:
Surviving AI has sentinels that can move very far - they can appear out of nowhere and cap your stuff. This particular AI doesn't declare war until you hit a certain tech level, and if you don't have any RPGs you certainly don't want to wardec them.

Suggested fix:
Minors can only capture buildings when at war

[Vic]

Adding a master check to prevent this in upcoming beta16.