8.3 did not have distrib-dirs ran on it, so always run on startup.

This fixes various ports that need /var/games, such as games/sokoban [1]

This is a hack, but is pretty fast and much more user friendly than
requiring rebuilding the jail. We can remove this when 8.3 is EoL.

Reported by:	miwi [1]
No need to display or error on the 8.3 mtree calls