pycompat: drop some now useless workaround for makedirs This `exists_ok` flag was added in Python 3.2

run-tests: install wheel using --prefix instead of --user --user does not work if a venv is enabled when calling run-tests.py

ci: automatically compute the python tag we use to identify tag This make the determination more automatic and less error prone. In addition, this will make it possible to run on a runner without a pre-determined Python version, like what we do for the macos and windows workers.

pytype: add relative timestamp to the output if `ts` is available This should help to identify the module that are the slower to analyze.

ci: build (and use) wheel for all supported version We test wheel building for all supported version and use them where applicable The usage is more verbose than I wish because .gitlab-ci is not that great.

ci: use a pre-setup many-linux image to build wheel This produce wheel that are more universal and identical to the one we want to publish.

ci: use smaller VM to build wheel There is no need for large machine for this job, Python will be mostly singled threaded anyway.

setup: add a way to force the setup to translate (or fail) we add the `MERCURIAL_SETUP_FORCE_TRANSLATIONS` variable that is intended to make sure we don't stop building the translation silently.