updating /sys/sys

[Gary Aitken]

I just used freebsd-update to upgrade from 9.1 to 9.2.
Everything seemed to go properly,
but if I look at /sys/sys
all of the .h files say something like:
   * $FreeBSD: release/9.0.0/sys/sys/cons.h 196506 2009-08-24 10:53:30Z ed $

/etc/freebsd-update looks like:

  ...
  Components src world kernel  
  IgnorePaths
  ...

Why aren't they updated?
What's the best way to get them updated?

Thanks,

Gary