cleanup: drop `dirstate.is_changing_parent` deprecated since 6.5 This was scheduled for removal, let us remove it.

cleanup: remove some code scheduled to be removed after 5.9 looks like we missed this when cleaning up previous code.

branching: merge stable into default

py3: pass unicode strings to hasattr() throughout I guess we missed these instances because they're not covered by tests.

perf: support --template on perf::phases

debugformat: fix formatting for compression level `bytes(<int>)` gives a very different result as `str(<int>)` and the display of `hg debugformat` have been broken for a while as a result.

tests: tweak chg test to make it fail less often the test apparently sometimes prints the word "start" as a part of profile, so let's no longer match "start": CHGHG=/*/install/bin/hg (glob) + \x1b[90m | 50.0% 0.01s profiling.py: __enter__ line 196: self.start()\x1b[0m (esc) + \x1b[90m | 50.0% 0.01s profiling.py: start line 261: self._profiler.__enter__()\x1b[0m (esc) + \x1b[90m | 50.0% 0.01s profiling.py: statprofile line 125: statprof.start(mechanism=b'...\x1b[0m (esc) + \x1b[90m | 50.0% 0.01s statprof.py: start line 356: state.thread.start()\x1b[0m (esc) + \x1b[90m | 50.0% 0.01s threading.py: start line 852: self._started.wait()\x1b[0m (esc)

cext: fix potential memory leaks of list items appended with PyList_Append Also reduce the duplication in the tricky code that uses PyList_Append by extracting it into a function `pylist_append_owned`.

Added signature for changeset 3fd1efb3ad12

Added tag 6.6.3 for changeset 3fd1efb3ad12