* vidir: Applied patch from Stefan Fritsch (one part of #412176):

* vidir: Applied patch from Stefan Fritsch (one part of #412176):
  - Check for control characters (especially newlines) in filenames
    and error out, since this can greatly confuse the editor or vidir.
  - If the source of a rename does not exist (and thus the rename will fail
    anyway), vidir should not move an existing target file to a tmpfile.
  - If a directory is renamed, vidir should take that into account when
    renaming files in this directory.
  - If a directory name is passed as name/ to vidir, vidir should not
    add second slash after the name.
* vidir: Add support for unlinking directories. To recursivly delete
  a directory and its contents, pipe find to vidir, and delete the directory
  and its contents in the editor. Closes: #412176