* renamed pmlist_t -> alpm_list_t
* made alpm_list_t a public type (alpm_list.h header)
* removed additional storage for registered DBs in pacman source
* some code cleanup
* removed duplicate (pm)list_display functions from pacman source
* misc code cleanup
* Modified some dependancy checking
* Changed "performing local database upgrade" message to be more clear
* Change 'usize' to 'isize' in database files
* Scriptlet output is now sent to pacman's log file
* Limited some debugging output to be more clear