src: continued use of Subversion for getting updates

[Graham Perrin]

Warner, thanks for the clarification.

Apologies for me taking the (rough draft/work in progress) documentation 
too literally.

On 23/12/2020 07:01, Warner Losh wrote:
> … This has been a big job with way more moving parts than I'd ever 
> thought possible. We've attended to most of them, and are fixing the 
> stragglers as the team becomes aware of them. …

 From the outside looking in: for so complex a project, progress seems 
remarkably smooth. Thanks to all involved.