dual summon

http://www.db.yugioh-card.com/yugiohdb/faq_search.action?ope=5&fid=17214&keyword=&tag=-1

operations.cpp

@@ -1551,6 +1551,7 @@ int32 field::summon(uint16 step, uint8 sumplayer, card * target, effect * proc,
 		if(core.summon_depth)
 			return TRUE;
 		target->enable_field_effect(false);
+		target->summon_info |= SUMMON_TYPE_NORMAL;
 		target->current.reason_effect = 0;
 		target->current.reason_player = sumplayer;
 		effect* deffect = pduel->new_effect();