[PATCH] test: add simple tests for online help

[Jani Nikula]

On Fri, 25 Nov 2011 13:36:26 -0500, David Bremner <david at tethera.net> wrote:
> I think Jani was just making fun of me when he suggested tests for
> notmuch --help, but I thought, why not.

Heh, I was only half joking - it is certainly good practice to create
tests for any bugs found and fixed. It's a bit embarrassing to have
--help segfault, but even more so to have it reappear in the future!
Good job.

Jani.