test-compat: merge mercurial-5.3 into mercurial-5.2

.hgtags

CHANGELOG

debian/changelog

hgext3rd/evolve/cmdrewrite.py

hgext3rd/evolve/evolvecmd.py

hgext3rd/evolve/metadata.py

hgext3rd/evolve/rewind.py

hgext3rd/evolve/stablerangecache.py

hgext3rd/pullbundle.py

hgext3rd/topic/__init__.py

hgext3rd/topic/revset.py

tests/test-split.t

tests/test-topic.t

tests/test-uncommit.t