test-compat: merge mercurial-5.4 into mercurial-5.3

.gitlab-ci.yml

.hgtags

CHANGELOG

hgext3rd/evolve/__init__.py

hgext3rd/evolve/compat.py

hgext3rd/evolve/evolvecmd.py

hgext3rd/evolve/metadata.py

hgext3rd/evolve/obsdiscovery.py

hgext3rd/evolve/obsexchange.py

hgext3rd/evolve/obshistory.py

hgext3rd/pullbundle.py

hgext3rd/serverminitopic.py

hgext3rd/topic/__init__.py

hgext3rd/topic/compat.py

hgext3rd/topic/stack.py

hgext3rd/topic/topicmap.py

tests/hghaveaddon.py

tests/test-check-compat-strings.t

tests/test-check-flake8.t

tests/test-check-pyflakes.t