常量本版本新增

NDiplomacy|DISPOSITION_FRIENDLY_HYSTERESIS

NDiplomacy|DISPOSITION_FRIENDLY_HYSTERESISloading_screen/common/defines/00_defines.txt:2013

deadband below the friendly opinion/trust thresholds a pair must fall past before leaving the friendly state

定义loading_screen/common/defines/00_defines.txt:2013