[Merge] lp:~jamesodhunt/upstart/add-session-file into lp:upstart

[James Hunt]

Hi Steve,

> Does this invalidate the rationale for this branch?
It certainly no longer seems useful for session cleanup, but I think still has value to users who do wish to run multiple sessions.

I've made the fixes you've suggested (although note that the mkdir in xdg_get_runtime_dir() would of course work in the case of a root user running a session :)
-- 
https://code.launchpad.net/~jamesodhunt/upstart/add-session-file/+merge/144881
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