* Implement item limit category (based on changes by VladimirMangos)

* Additional check for HandleAutoBankItemOpcode (thanks to VladimitMangos)
* Properly show empty vendor list for empty item list (author: a1ien)
* More stricted checks for store operations (thanks to VladimirMangos)
* Prevent autostoring of not empty bags (thanks to L1ghtGu4rd)

Changes need testing. Please post bugs on our tracker.

--HG--
branch : trunk

src/server/game/Entities/Item/Container/Bag.cpp

@@ -213,6 +213,19 @@ uint32 Bag::GetItemCount(uint32 item, Item* eItem) const
     return count;
 }
 
+uint32 Bag::GetItemCountWithLimitCategory(uint32 limitCategory, Item* skipItem) const
+{
+    uint32 count = 0;
+    for (uint32 i = 0; i < GetBagSize(); ++i)
+        if (Item *pItem = m_bagslot[i])
+            if (pItem != skipItem)
+                if (ItemPrototype const *pProto = pItem->GetProto())
+                    if (pProto->ItemLimitCategory == limitCategory)
+                        count += m_bagslot[i]->GetCount();
+
+    return count;
+}
+
 uint8 Bag::GetSlotByItemGUID(uint64 guid) const
 {
     for (uint32 i = 0; i < GetBagSize(); ++i)

src/server/game/Entities/Item/Container/Bag.h

@@ -45,6 +45,7 @@ class Bag : public Item
 
         Item* GetItemByPos(uint8 slot) const;
         uint32 GetItemCount(uint32 item, Item* eItem = NULL) const;
+        uint32 GetItemCountWithLimitCategory(uint32 limitCategory, Item* skipItem = NULL) const;
 
         uint8 GetSlotByItemGUID(uint64 guid) const;
         bool IsEmpty() const;