[Parakeet] Use standard PMC. Add some comments. But parakeet.pir is still broken.
[Parakeet]
Use standard PMC.
Add some comments.
But parakeet.pir is still broken.


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@14562 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot