Origin for each line in runshm.init from check-in 2bf099898d:

2bf099898d 2019-10-20    1: # vim:ft=make:
2bf099898d 2019-10-20    2: 
2bf099898d 2019-10-20    3: runshm: cleanvar
2bf099898d 2019-10-20    4: 	: Mount and populate /var/run/shm.
2bf099898d 2019-10-20    5: 	mkdir -p /var/run/shm
2bf099898d 2019-10-20    6: 	mount_tmpfs -m 01777 dummy /var/run/shm
2bf099898d 2019-10-20    7: 	mkdir -p -m 01777 /var/run/shm/tmp