Add anvil window and slot area.
Add MC|ItemName plugin message.
Add clicks, exp subtraction, item check, ...
This isn't a enchantment table :D
Add anvil shift click.
Changed HandleAnvilItemName() length to size_t in ClientHandle.h
Add doxycomments to cSlotAreaAnvil functions.
Add comments to CanTakeResultItem()
Fix SetRepairedItemName() in SlotArea.cpp
Change int to size_t return.
Simplified the HandleAnvilItemName() code.
Rename CanRepairWithItem to CanRepairWithRawMaterial and rename Size() to Count()
Merge pull request #985 from Howaner/Anvil

Add anvil inventory.