Bark blocks can be stripped

If a "bark block" of any type (oak_bark, spruce_bark, birch_bark, jungle_bark, acacia_bark, dark_oak_bark) is stripped by an axe (wooden_axe, stone_axe, iron_axe, golden_axe, diamond_axe), it will turn into a stripped log with axis "y".

Steps to reproduce:
1. Place a bark block
2. Obtain an axe
3. Rightclick the bark with the axe