Hast locking up under 9.2

[Pete French]

> Please try this:
>
> http://people.freebsd.org/~trociny/patches/hast.primary.c.memsync_write_complete.2.stable9.patch

That applied fine, and l'm now running that on the test databases here.
I never maaged to make those actually lock up before, but I did see the
assertions on those machines, so am trying there before I risk trying it live.
Thanks for th patch, and I will let you know what results I get...

-pete.