Merge branches 'f/keyword/amd64' and 'f/keyword/x86'

* f/keyword/amd64:
  [pyhistorian] Pushed amd64 stabilisation back 45 days

* f/keyword/x86:
  [pyhistorian] Pushed x86 stabilisation back 30 days
  [pw] Pushed x86 stabilisation back 30 days

Conflicts:
	doc/packages/dev-python.rst
	support/stabilisation.rem