[PATCH] WIP: sort top level messages in thread

[Amin Bandali]

Hi Gregor, David,

> The patch applied cleanly on top of the others (which I use
> regularly with no problems) and fixed the threading order problem
> in the two test cases I send you.  Other RT-emails are also
> ordered nicely now.
>
> Thanks for this patch, I'll also use it regularly.

Seconded.  Thanks for your work on the patch, David.  It seems to
nicely order my RT tickets too, including the very first message
in each thread.

I'll continue using the patch and will report back if I run into
any issues.

-amin