moving sockbuf in to its own header

[gnn at freebsd.org]

At Sun, 20 Jul 2008 16:07:29 -0700,
Kip Macy wrote:
> 
> Actually, I'd like to re-factor multiple parts of socketvar in to
> separate files.
> 
> Please provide feedback on the following:
> 
> http://www.fsmware.com/socketvar_refactor.diff
> 

Looks good to me.

Best,
George