[OE-core] lib/oe/sstatesig: Ensure packagegroups don't continually rebuild

[Richard Purdie]

On Wed, 2013-11-06 at 16:51 -0200, Otavio Salvador wrote:
> On Tue, Nov 5, 2013 at 8:15 PM, Richard Purdie
> <richard.purdie at linuxfoundation.org> wrote:
> > packagegroups are allarch and shouldn't change depending on the target
> > or machine selected. In general they should have good stable namespaces
> > for their dependencies. As such we can exclude them from rebuilding when
> > dependency checksums change.
> >
> > Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
> 
> What about machine-base and core-boot? this may change depending on machine.

Those already get marked as machine specific. I'd not expect
dependencies to be changing package names there for example so I'm not
sure this is an issue.

Cheers,

Richard