Script to tar up an already instaled package.

Now my question is, how can we include this? I'd prefer to have it
available from pkg_admin, but that is C, and the other is a script -
rewrite in C?

The Script has still a problem, as the MTREE file is removed after
a pkg_add/make install. As leaving the MTREE file will lead to a
~10% increase in space needed for /var/db/pkg which I'm not sure
we should do, esp. as the files are almost always the same again.
(On my notebook with ~250 installed pkgs, the size increasement
would be from 8.8MB to 10MB).

Send your thoughts to me <hubertf@netbsd.org> !