forked from mirror/OpenTTD
-Change [NoAI]: mark AISubsidy::SourceIsTown, AISubsidy::GetSource, AISubsidy::GetDestinationType, AISubsidy::GetDestination as deprecated
-Change [NoAI]: mark AISubsidy::SourceIsTown, AISubsidy::GetSource, AISubsidy::GetDestinationType, AISubsidy::GetDestination as deprecated