bug#25261: ls -L: also allow seeing intermediate links

[積丹尼 Dan Jacobson]

$ man ls
       -L, --dereference
              when showing file information for a symbolic link, show informa-
              tion  for  the file the link references rather than for the link
              itself

Ah ah ah... so one can only see the first (no -L) or last (-L) of a
e.g., long chain of symbolic links. Perhaps add a --symbolic-link-depth
option to be able to see where an arbitrary depth of symbolic links
points to. Or add a -L1, -L6, -L14 ... option.