[rdial] Pushed amd64 stabilisation back 45 days

Waiting on upstream to stabilise usable cov-core.
[flake8] Pushed amd64 stabilisation back 45 days

Waiting on upstream to stabilise usable pyflakes.
Merge branch 'feat/amd64_keywording'

* feat/amd64_keywording:
  [flake8] Pushed amd64 stabilisation back 45 days
  [rdial] Pushed amd64 stabilisation back 45 days
[ccontrol] Use python-r1 for GUI script

Package-Manager: portage-2.1.11.62
Manifest-Sign-Key: C0174749
[CommandLineApp] Use system paver

Package-Manager: portage-2.1.11.62
Manifest-Sign-Key: C0174749
Update metadata cache for upstream's eclass changes