Code review comment for lp:~spiv/bzr/import-tariff-test-subprocess-deadlock

I will retry it but it wasn't addressing the problem on OSX (easier testing there for me).

Also note http://pad.lv/625551 which shares some bad smells with this issue.

And also http://pad.lv/788235 which also involves bzr_serve and hangs in a maverick chroot (easier to reproduce, several tests currently repeatedly fail (with some variants regarding which ones fail)).

I think all of them are revealing a racing condition we never encounter before but was always present.

Oh, and of course the breakin tests which have now been deleted by poolie were also probably hitting the same problem but were blacklisted on babune.

This bug had fun with us for too long, I officially call for a war against it ;)