Building Construction Limits should be dictated in the Entitiy XMLs.

[Michael D. Hafer]

Building limits "per territory" and other building limit attributes should be dictated in the entity code rather than in a script.

Example: The Hellenes have 3 Special Buildings. Each one could have a different building limit criteria. Same for any other faction and any other building type (for instance, what if we want the Romans to be able to build 3 Barracks per territory instead of the 2 dictated in the script? The Persians are supposed to be able to only build one "Kahk" Special Building per map, not per territory as is dictated in the script).