data values aren't supported fully by hasitem

Newly added hasitem target selector does't process data values in some conditions.

Using [hasitem=\{item=potion}] can only target water bottle, instead of targeting all potions. And commands like /me @s[hasitem=\{item=potion}] directly crash the game

How to reproduce 1:

• hold a potion item (not a water bottle)
• run command /testfor @s[hasitem=\{item=potion}]
• you can't find yourself

Expected:

• you can target yourself because you have a potion.

How to reproduce 2:

• hold a potion item (not a water bottle)
• run command /me [hasitem=\{item=potion}]

• Game crashes

Expected:

• you can target yourself because you have a potion.

block item's data values aren't supported, which means we can't target green wool, stone solely