Parrot fixes
- Parrots will now reset to wander after being stuck for long enough.

- Attacking a parrot will no longer give the attacker a "you have nothing to drop" message, that was a typical 'usr' error, woops.

- Fixed some typos in the comments.. What? That's totally commit log material!
Moves the copy/pasted code into a function.
Merge pull request #302 from Nodrak/parrot_fixes

Parrot fixes