[py-dev] Svn auth update

[Guido Wesdorp]

Hi!

I've implemented the SvnAuth class now, as Holger suggested, and made 
that the svnwc constructor, and the methods that connect to the server, 
all accept it as an argument (and use it, of course ;).

You can see the progress on the 'guido-svn-auth' branch (SvnAuth code in 
py/path/svn/auth.py, and an updated version of the document I attached 
before in py/path/svn/auth.txt).

After playing with the api a bit, I think agree with Holger that passing 
auth to children from methods that return path objects is not necessary, 
and may even be confusing, so perhaps we should indeed skip that for now.

What I do want to add somehow is allow to set the --non-interactive 
switch somehow, although I'm not sure how (it doesn't seem proper to 
have it be part of the authentication information, but having yet 
another argument to all those methods is also not nice).

I guess I'll continue with adding support for the auth argument to 
py.path.svnurl on friday, if no-one objects...

Cheers,

Guido