#272 Lua function(s) needed for vitality potions XP. TSkill. AA

I need more criteria for this honestly

625 ITEM_STAT_COMBATEXPMOD
626 ITEM_STAT_TRADESKILLEXPMOD
627 ITEM_STAT_ACHIEVEMENTEXPMOD

guess theres an item stat for them that needs to be wired

we already support combat exp mod

bool Player::AddXP(int32 xp_amount){
	MStats.lock();
	xp_amount += (int32)(((float)xp_amount) * stats[ITEM_STAT_COMBATEXPMOD]) / 100;
	MStats.unlock();

and tradeskill xp

bool Player::AddTSXP(int32 xp_amount){
	MStats.lock();
	xp_amount += ((xp_amount)*stats[ITEM_STAT_TRADESKILLEXPMOD]) / 100;
	MStats.unlock();

ITEM_STAT_ACHIEVEMENTEXPMOD is the only one that isn't in it seems

since aaxp needs a complete implementation this is low on the list.