Hardcoded behavior of triggering HoW endgame in original IWD:HoW

[argent77]

oIWD is hardcoded to trigger the HoW endgame sequence when the party uses a travel trigger with the name "To9603_Special". No further conditions appear to be checked. A travel trigger with that name is defined in AR9604.ARE (where you fight Icasaracht) that is used to leave the area. The same sequence can be invoked by the script action ExpansionEndCredits() (which exists in AR9603.BCS but is never triggered in regular gameplay).

Moreover, the game checks the global variable "Join_Posse" to decide whether to show the HoW end credits (if Join_Posse is zero) or return the party to Hjollder's home in Kuldahar (if Join_Posse is non-zero) when the HoW endgame sequence is executed.