Upstart config file generation

[Clint Byrum]

Excerpts from Scott James Remnant's message of Tue May 03 23:12:57 -0700 2011:
> It's hard to elaborate, because I don't understand what your proposal does
> that Upstart doesn't already do.

I've uploaded it to oneiric, here's the revision:

http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/oneiric/upstart/oneiric/revision/1314

This replaces the one-off -wait jobs that people have had to write for things
like statd that have AND conditions with events that block.