[poky] best way to purge stale packages?

[McClintock Matthew-B29882]

On Fri, Jun 1, 2012 at 1:05 PM, Bob Cochran <yocto at mindchasers.com> wrote:
> Hello,
>
> Inside my work directory, I have three versions of openssl:
> openssl-1.0.0i-r15.2, openssl-1.0.0i-r0.1, and openssl-1.0.0h-r15.1, with
> the latter two being stale.  I also have artifacts from these stale packages
> in tmp/stamps.
>
> I haven't come along a bitbake option or ancillary script to remove stale
> packages as my recipes bump.  Is there one?

./scripts/cleanup-workdir ?

-M