largefile: use parentchange during mergerecordupdates This match what core is doing around recordupdates. Differential Revision: https://phab.mercurial-scm.org/D11105

largefile: use `set_tracked` in the `hg add` overwrite This is the new shiny API. Differential Revision: https://phab.mercurial-scm.org/D11104

largefile: synchronise the dirstate within a `parentchange` context Semantically these changes are made to adjust the dirstate after a commit, so it should be in a `parentchange` context. Differential Revision: https://phab.mercurial-scm.org/D11103

upgrade_utils: fix crash for removecldeltachain action This fixes issue6383. Differential Revision: https://phab.mercurial-scm.org/D10914

windows: enforce the module policy to be c for test This is the same as what we do with the linux test. Differential Revision: https://phab.mercurial-scm.org/D11100

packaging: add command line flag to add extra vars to pyoxidizer This felt simpler than the previous incarnation of injecting content into the WiX build. I decided the easiest way to pass an arbitrary map into the process was some json - I may regret this, but time will tell on that. Differential Revision: https://phab.mercurial-scm.org/D11093

pyoxidizer: add hooks to inject extra python packages and install files We need this type of hook to inject our internal extension and resource files at Google. Presumably this could be useful to others, so instead of trying to carry an internal patch we've done this in a modular way that should be of value upstream. I'm extremely puzzled by the behavior of glob() on Windows, and I'll be filing at least one (probably two) bugs upstream about it. Differential Revision: https://phab.mercurial-scm.org/D11092

doc: wrap the help text for the purge extension Not sure why `black` or some other checker didn't complain about this. Differential Revision: https://phab.mercurial-scm.org/D11036

dummyssh: call python script with python We don't want windows to grab whatever python got configured to run .py file. We need the python used during the test to be used. Differential Revision: https://phab.mercurial-scm.org/D11083

dummyssh: use subprocess instead of os.call Welcome in 2020 Differential Revision: https://phab.mercurial-scm.org/D11082