Comment 2 for bug 13143

Mounting a tmpfs over /var/run is not supported, because it masks directories
which are placed there by the packaging system.

Passing this bug to Martin, because he seems interested in making it work
anyway. :-) Bear in mind that this duplicates packaging data in two places
(i.e., the ownership and mode of the directory), in the .deb and in the init
script, which is undesirable.