mbuf revision, testers/comments wanted.

[Julian Elischer]

> 
> I'll have to see about that.  Any suggestions similar to visio for unix? 
> I guess graphviz can also do datastructure diagrams but I have not used 
> it for this before.  I'll check it out but if you have other suggestions 
> it's welcome.
> 

BTW I once satisfied this requirement using a screenshot of the output 
of 'ddd' (the debugger, not the 'dd' replacement)