Privateer capture while defending message

Resulting to-do list, moved from discussion below:

• Icons on capture should show capturing unit - war - victim.
• Any destroy message for the same battle should be suppressed.
• Capture active only on attack (thanks @ravignir ).
• plunderFromDamage - mention ‘ingame civilopedia’, and maybe this issue as sources
• plunderFromDamage calls - make offensive only or defensive/offensive controlled by unique
• toInt() earlier so plunder message won’t show fractional Gold
• Test thoroughly
• Update wiki in case #4698 gets merged No new unique after all.

… that was one and the same Trireme.

Question: Does Civ5 allow Privateers to capture while defending? To-do: Check that message. Defender wins - so far OK. But if it results in capture the word ‘kill’ isn’t appropriate and we should consider special-casing this. Of course only if the answer above is ‘yes’.

[ravignir]

Stuff I noticed while coding:

* The unit 'captured' by a Privateer has nothing common with the defeated unit except the BaseUnit name, it's created from scratch with always zero promotions, 0 XP and 50% health. That's fine - but while we're at it: @ravignir - does this match Civ5?

* The "plundered" Gold is magicked from thin air, and not subtracted from the victim's reserves. Same question.

yes and yes.

[SomeTroglodyte]

Stuff I noticed while coding:

• The unit ‘captured’ by a Privateer has nothing common with the defeated unit except the BaseUnit name, it’s created from scratch with always zero promotions, 0 XP and 50% health. That’s fine - but while we’re at it: @ravignir - does this match Civ5?
• The “plundered” Gold is magicked from thin air, and not subtracted from the victim’s reserves. Same question.