Origin for each line in cleanvar.init.mk from check-in 7a1e7f4a58:

7a1e7f4a58 2019-10-21    1: CLEANVAR_DIRS?=/var/run /var/spool/lock /var/spool/uucp/.Temp
7a1e7f4a58 2019-10-21    2: 
7a1e7f4a58 2019-10-21    3: cleanvar: mount
7a1e7f4a58 2019-10-21    4: 	echo "MRC:$@> Cleaning 'var's."
7a1e7f4a58 2019-10-21    5: .for dir in ${CLEANVAR_DIRS}
7a1e7f4a58 2019-10-21    6: 	-test -d ${dir} && find ${dir} -mindepth 1 -delete
7a1e7f4a58 2019-10-21    7: .endfor
7a1e7f4a58 2019-10-21    8: 	install -m644 /dev/null /var/run/utmpx