The kernel patches?
You wont need them unless you plan to modify the source yourself, i haven't done it in osx for ages but check out this if you're interested.

http://shantonu.blogspot.com/2009/09...-has-been.html

And please read this:
http://linux.die.net/man/1/patch

There is no sense in going trough this unless you know what you're doing and actually commit some changes.