[horde] FTP VFS Recursive Delete Function

[Chuck Hagenbuch]

Quoting Jeff Graves <jeff at image-src.com>:

> With this change it works fine.

Committed, thanks.

> PS. I'm using this backend with Gollem
> and it gives users an easy way to delete a directory structure. Maybe
> we should make it an option...

Well, the way I rewrote it, $recursive defaults to false, so unless Gollem
is trying for recursive deletes by default, it shouldn't delete a non-empty
folder...

-chuck

--
Charles Hagenbuch, <chuck at horde.org>
"... It is not more light we need, but more warmth! We die of cold, not of
darkness. It is not the night that kills, but the frost." - Miguel de
Unamuno