Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' into staging

vmstate-static-checker fix for 4.2

# gpg: Signature made Mon 25 Nov 2019 22:51:23 GMT
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/python-next-pull-request:
  vmstate-static-checker: Fix for current python

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>