[PATCH] Let entities change the entitylimits

[sanderd17]

In some cases, it's nice if entities can change the entity limits. I'm thinking of building a fortress before you may create another 5 battering rams, or something similar.

It was also discussed in the past that this could be a nice approach for celtic war dogs (it's strange in a way that the number of dogs gets limited by a population limit, while it's not a human population).

So I implemented a class that can change the entity limits of a player, and also implemented the example to have maximum 10 dogs per kennel.

[sanderd17]

Updated the patch so now it supports changing multiple entity limits (e.g. a CC can change the tower and fortress limit).

[sanderd17]

As the limit changer can be used as more general replacement than the old way to do a limit per CC. And as that limit per CC was never used anyway, I just removed that part of the code.

[sanderd17]

Also added an entity limit to the pillar of ashoka, so building is only allowed when ashoka is alive, but ashoka himself can't build any buildings (which looks strange anyway).

[sanderd17]

In 13850:

let entities change entity limits. Fixes #2076