[PATCH] Auto garrison units produced during an Alert

[Itms]

During an Alert, newly trained units should be put under alert if the level of alert is high enough.

[Marcio]

Female one can be, great, military I don't know.

[Itms]

I change the behaviour of the feature : it should not rely on the production building.

[Itms]

This is a way of doing this.

However, I wonder if it's a good idea to use a global message : could it lead to a performance loss ? Please share your thoughts.