Re: multi-wc-format: svn_wc__format_from_version()

[Julian Foad]

That's an old function. "Characteristic" previously meant the only format 
supported by a given client version. We should change the word now. What should 
the function return now? The newest, I think: its callers are upgrade and 
checkout; essentially it is used to implement the --bikeshed=1.15 option.
- Julian