Memo to myself: directions for `svn unfail'

Sorry for this-- I keep losing this information so I'm just sticking this note to myself up here. Who knows, if other people run into this it might be of use to them, too.

If you find you're inexplicable being asked to authenticate when doing an svn up and it won't accept your password, (particularly after renaming or moving a file in the repository), here's the solution:

...if "svn up" doesn't work, you can make "svn switch" to the same url, it will update all with no problems.