Dungeon Crawl custom code merge

Added numerous modding hooks.
Added rules:
	Character:KeepLevelOverMax - Don't delevel a character if they are found to be over max level rule.
	Spells:UseCHAScribeHack - Optionally omit spells with CHA in effect12 when using scribespells and traindiscs
	Combat:MonkACBonusWeight - Adjust the weight threshold for monk AC bonus
	Combat:ClientStunLevel - Adjust the level clients kicks and bashes start to roll for stuns
	Combat;QuiverWRHasteDiv - Adjust the divisor applied to weight reduction for haste calcs
	Combat:UseArcheryBonusRoll - Make archery stationary bonus a roll
	Combat:ArcheryBonusChance - Archery stationary bonus chance

Added account flags and associated perl wrappers
Added EVENT_ITEM_TICK for interactive items
Added EVENT_DUEL_WIN and EVENT_DUEL_LOSE, which exports $enemyname and $enemyid
Added timer and interval to console worldshutdown command
Added EQW interface for worldshutdown and server-wide messages

zone/questmgr.h

@@ -257,6 +257,8 @@ public:
 	bool createBot(const char *name, const char *lastname, uint8 level, uint16 race, uint8 botclass, uint8 gender);
 #endif
 
+	inline uint16 GetMana(uint32 spell_id) { return( spells[spell_id].mana); }
+
 protected:
 	Mob *owner;	//NPC is never NULL when functions are called.
 	Client *initiator;	//this can be null.