combat: Modifiy damage immunity effect handle
combat: Remove obsolete hooks, Fix GetArmorClassVersus hook.
levels: Fix summon familiar/animal companion past 40th level

- Currently this only summons the 40th level familiar/animal
  companion.  As such if custom familiars/etc were created
  they would be ignored.
exalt: Modifiy SummonAssociate to use char** instead of CExoString.
exalt: Add CNWSPVPEntry and CNWNSPVPEntryList.
talib/2da: Initialize locals.
talib/init: add missing functions addresses.
nsevents: add PVP like/dislike hook/event.

- TODO: Suppressing forget aggression is currently hardcoded.
  This is the function that causes players to clear all
  actions when another player joins a party or likes/dislikes
  them.
talib/custom: Add NULL checks.
combat: Updates & Fixes

-- Add helper function for getting equip number from attack
   type.
-- Fix error in resolveCriticalRoll
-- Fix improperly initialized Attack::target_is_cre_ member.
-- Add some debugging strings.