[rdiff-backup-users] Cygwin/Windows

[Seth Warn]

Thank you Mr. Kempe for your suggestion regarding the slashes.  Also
interesting is that, after the first forward slash, it becomes
case-sensitive.

To recap, if you're passing arguments to rdiff-backup via a windows
command line:

- All slashes after the first should be forward slashes.
- It's not case-sensitive before the first forward slash, and is
case-sensitive afterwards.

So if you're referring to, for example, C:\DFS\Root

- C:\DFS/Root is correct
- c:\dfs/Root is correct
- C:\DFS\Root is not correct
- c:\dfs/root is not correct

Seth Warn