PERFORCE change 120842 for review

[Roman Divacky]

On Sun, Jun 03, 2007 at 03:08:34PM +0000, Roman Divacky wrote:
> http://perforce.freebsd.org/chv.cgi?CH=120842
> 
> Change 120842 by rdivacky at rdivacky_witten on 2007/06/03 15:07:41
> 
> 	Implement linux_unlinkat(), linux_linkat() and linux_symlinkat().
> 	The corresponding kern_* functions for unlinkat and symlinkat are copied
> 	from *at-less versions because there is a loop.

maybe I can keep only the *at versions and change all the consumers to use that
to avoid code duplication. there are only a few consumers.

roman