[poky] update about SSTATE status

[Richard Purdie]

On Mon, 2010-11-22 at 19:29 +0800, Tian, Kevin wrote:
> >From: Tian, Kevin
> >
> >Sorry that I don't have such info from existing debug log. There I just recorded dep
> >variables used in checksum calculation and also the task data itself. However I didn't
> >see direct invocation on OEROOT. I'll figure it out later.
> >
> 
> I think the reason is simple. OEROOT is exported as shell variable by poky-env-internal.
> All preserved shell variables are included in dependencies of shell tasks:

Ah, good find. Since nothing actually needs OEROOT anymore, lets remove
it :). I'll queue some patches.

Cheers,

Richard