TODO:

- add i18n (gettext) support

- get ride of "ORE" tags.

- implement missing functionnalities (mainly pacman -S <pkg1> <pkg2>, and
packages replacement)

- pacman_deptest() is not fully implemented

- backport new functionnalities from pacman >= 2.9.3

- bring back the autoconf/automake stuff

- review how things are displayed in the frontend (normal display,
verbose mode, which usage for the library log callback?)

- review errors handling in the library (globalise pm_errno usage,
improve error meanings)

- add a structure in pacman to hold all the configuration (pmo_root, ...)

- add HTTP support for .lastupdate files

- library documentation (doxygen? man pages for public functions? ...)

- import libtar code into CVS too?