[Merge] lp:~jamesodhunt/upstart/bug-980917-the-bug-that-would-not-die into lp:upstart

[Steve Langasek]

Actually, on second thought: while I don't think the mknod()s here will ever do any good, they also aren't harmful in the case that the device file already exists.  So it's fine to keep all of them, *including* the /dev/console one... so I'll just add that back.
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https://code.launchpad.net/~jamesodhunt/upstart/bug-980917-the-bug-that-would-not-die/+merge/118579
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