Most of the patches looks good, i only have comments on:

- yocto-compat-layer.py: apply test_signatures to all layers

For the rest:

Acked-by: Aníbal Limón <anibal.limon@linux.intel.com>

Cheers,
Anibal

On 05/29/2017 10:32 AM, Patrick Ohly wrote:
> While enhancing the layer structure in intel-iot-refkit I ran into
> various cases where enhancements to the tool were
> necessary. intel-iot-refkit now has oe-selftests that check all layers
> using this tool. In addition, the signature checking utility code is
> imported into a custom test that also covers a refkit specific case
> (including refkit-config.inc must not change signatures).
> 
> Patrick Ohly (6):
>   yocto-compat-layer.py: avoid adding layers more than once
>   yocto-compat-layer.py: tolerate broken world builds during signature diff
>   yocto-compat-layer.py: apply test_signatures to all layers
>   yocto-compat-layer.py: add test_world
>   yocto-compat-layer.py: allow README with suffix
>   yocto-compat-layer.py: make signature check code reusable
> 
>  scripts/lib/compatlayer/__init__.py     | 90 +++++++++++++++++++++++++-
>  scripts/lib/compatlayer/cases/common.py | 91 ++++++--------------------
>  2 files changed, 111 insertions(+), 70 deletions(-)
> 
> base-commit: 598e5da5a2af2bd93ad890687dd32009e348fc85
>