常量本版本新增

NDiplomacy|GREAT_POWER_AREA_WEALTH_DIVISOR

NDiplomacy|GREAT_POWER_AREA_WEALTH_DIVISORloading_screen/common/defines/00_defines.txt:2271

median_tax_base / this = unit for area point scaling (median area = 5 pts)

定义loading_screen/common/defines/00_defines.txt:2271