Origin for each line in cleanvar.init from check-in aea391e34e:

aea391e34e 2019-10-19        arcade: # vim:ft=make:
aea391e34e 2019-10-19        arcade: 
aea391e34e 2019-10-19        arcade: CLEANVAR_DIRS?=/var/run /var/spool/lock /var/spool/uucp/.Temp
aea391e34e 2019-10-19        arcade: 
aea391e34e 2019-10-19        arcade: cleanvar: mount
aea391e34e 2019-10-19        arcade: .for dir in ${CLEANVAR_DIRS}
aea391e34e 2019-10-19        arcade: 	find ${dir} -mindepth 1 -delete
aea391e34e 2019-10-19        arcade: .endfor
aea391e34e 2019-10-19        arcade: 	install -m644 /dev/null /var/run/utmpx