merge py3.7 into release

--HG--
branch : release-pypy3.7-v7.x
2 jobs for release-pypy3.7-v7.3.6rc1 in 10 minutes and 34 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Test
passed check_rpython_annotations #245598

00:07:26

passed hpy_tests #245599

00:10:33