[pkg_complete] final report

[Julien LAFFAYE]

Hi,

This week I mostly tested and polished my code.
The project is completed: basically, we can create complete package via the
new pkg_complete(1) utility.
pkg_add(1) can add this new type of package (once installed the packages in
the set appear as they have been
installed separately), pkg_info(1) list the packages in the set if it is a
complete package.

With the switch to libarchive, pkg_add' ing a complete package is even
quicker than pkg_add' ing the main package with
all of its dependencies on the same directory (some crude benchmark showed
3.10s vs. 2.20s).
For regular package, one can also expect a performance boost (25s vs 15s for
emacs for exemple).
The errors such as conflicts, missing dependencies are also catched earlier
as we parse the plist without hitting disk.

Regards,
Julien