API changes

[Taugeshtu]

I decided to create another thread to keep hook requests and api changes separate.

Code:

BlockStringToType()

Is somewhat misleading in context of ItemTypeToString and ItemToString functions. I suggest renaming it to ItemStringToType(), since we don't have overlapping item/block names anyway (by this I mean cases in which actual in-world block has a different ID from inventory item)

That's all for now...