bug#10311: RFE: Give chmod a "-h" option as well

[Bob Proulx]

Eric Blake wrote:
> Bob Proulx wrote:
> > * The mode bits of a symlink are not used.  The original Unix authors
> >   ignored them and did not provide any way to change them.
> 
> That's true for Linux, but false for BSD (where the mode bits of a
> symlink can allow restriction on dereferencing through the symlink).

What?!  I was not aware of this.  I have been too SysV centric for too
many years.  And I do not have access to a BSD system in which to
learn about it.

It would be informative to myself and I expect others if you could
post an example of the behavior from a BSD system showing the
restriction through a symlink's permissions.

Bob