favor of the PKG_DBDIR variable in /etc/pkg_install.conf. The purpose
of this is to only have to define the location of the packages database
in a single place and have all other system components pick it up.
pkgdb_dir is still honored if defined and the scripts will spit out a
warning in that case, asking the administrator to migrate to the
PKG_DBDIR setting. We can't remove this compatibility workaround until,
at least, after NetBSD 6 is released.
53cb2117e8