bug#44895: Add Info-copy-permalink

[Drew Adams]

If you can easily create a feature, yourself,
to tell Mrs N. how great Emacs is, that in
itself speaks to that greatness.

And of course vanilla Emacs can decide to add
any such feature as a standard, default feature.

In this case it's trivial, and I pointed to
free code that does it.  Feel free to deny
yourself use of it.

> If I have to use non-standard / non-default features to tell Mrs.
> Nerblefield how great emacs is, then perhaps emacs is not that great.
> 
> >>>>> "DA" == Drew Adams <drew.adams@oracle.com> writes:
> DA> If you use Info+ then `G' (`Info-goto-node-web')...