Allow AI to reconsider Superweapons

[Graion Dilach]

If I attach a UnitDelivery Superweapon to a building, that building is considered as a superweapon building for the AI and the AI won't build it until late-game, while for example, Paradrop SWs have no effect on the AI's building list.

This should be controlled with a tag.

##### STEPS TO REPRODUCE #####
The attached rulesmd.ini has two UnitDelivery SW's and one Paradrop SW.

All are connected to the airports, but wile Tank Drop will be built, the others are won't.

[Graion Dilach (graiondilach)]

Oooops.

Feature.

[Renegade (renegade)]

Failing on all three fields is a little more than an "oooops". :P

[Graion Dilach (graiondilach)]

Well, originally I considered it as an AITargeting issue but while I was translating the problem in my mind, I realized that A, it isn't B, whatever will I write down, it won't be enough accurate.

To misset is, as Hungarian says, just 'cream on the cake'.

Ah well, seems like I am the only one, who considered the UnitDelivery SWs as same as Paradrop SWs.

[Graion Dilach (graiondilach)]

This is neither a bug or a feature, but a modder's mistake.