Log Message:
pkgin-0.5.1
        . Don't download packages when repository is a file:// scheme
        . Reduce verbosity when marking non-autoremovable packages
        . Keep going if unmet requirements are encountered and warn about
          it before proceeding
        . Always move pkg_install on top of the "to-upgrade" list
        . pkgin now depends on pkgsrc's pkg_install
        . Log timestamp
        . Better handling of pkg_install error logs
        . rec_pkglist() now takes a va_list
        . Added "requires" and "provides" to have a closer \ 
look on packages
          requirements
        . Globs can now be passed as an argument for package installation, i.e.
          # pkgin in 'mysql-server<5.1'
        . Export / import a list of packages as requested by wiz@
        . Operations tracing flag (-t)
        . Database silent migration
        . More flexible check_yesno()
        . Made pkgin in / rm yes by default
        . One struct to rule them all (Pkglist)
        . Got rid of many useless lists (speed x10, literally)
        . Introduced FULLPKGNAME as db member, speed ups searches
        . unique_pkg(): no more "many versions of foo", pickup newer