* Removed the PMList typedef, in favor of the same naming scheme other
structs use 'pmlist_t'
* Added a time stamp on debug output, to make it more informational
* Moved alpm_db_register to _alpm_db_register, making the public function
not take a callback parameter
<vmiklos@frugalware.org>):
if pacman is desiganted as a target in a sysupgrade operation, it should be able to upgrade itself first upon user request.
- removed uneeded sanity checks in alpm interface calls
- replaced printf by MSG in pacman