Bug#973561: sysvinit-utils: the pidof program doesn't find, processes in the 'D' state

[Jesse Smith]

The behaviour described, pidof not seeing processes in the "D" state, is
expected, correct, and documented in the pidof manual page. As it says
in the manual page, if yo uwant to see processes which are
uninterruptable or zombies then it is required to pass the "-z" command
line flag.

- Jesse