bug#33336: 26; Document how to restore trashed files

[Drew Adams]

> > Where trash is just another directory, you are right.  But that's
> > just one variety.
> 
> Actually, I take that back: even if trash is a directory that uses the
> freedesktop trash spec, undeleting a file via Dired is not entirely
> straightforward, for at least two reasons:
> 
>   . Dired is based on parsing the output of 'ls', and AFAIK GNU 'ls'
>     isn't yet capable of displaying trash directories in useful,
>     human-readable ways (we'd probably need to reuse/reinvent portions
>     of ls-lisp?)
>   . Trash directories routinely have several versions of the same
>     file, and AFAIK Dired doesn't have capabilities for presenting
>     several versions of the same file in a way that would facilitate
>     the decision whether and which version to restore

But "just another directory" is more general than "directory
that uses the freedesktop trash spec".  At least if it is
an ordinary ("just another") directory, and not a directory
that uses the freedesktop trash spec, can't we help users
wrt restoring files parked there?