unionrepo: use normal inheritance scheme to call revdiff

unionrepo: fix `revdiff` implementation to use `rawdata` The parent code is using rawdata so we should use it here. Before this change, union repo was probably broken with some flag processors.

unionrepo: get rid of `baserevision` The method is not called anywhere anymore, so we can safely drop it. Some of the comment get moved to `baserevdiff` because we did not got rid of it (yet).

unionrepo: use a lower level overide in unionrepo too The unionrepo class also have a strange `baserevision` hack, let's try to get ride of it too.

bundlerepo: drop the custom `rawdata` implementation We can rely on the main one now.

bundlerepo: drop the `baserevision` hack It is not used anywhere anymore, so we can safely drop it.

bundlerepo: simplify code to take advantage of `_rawtext` In the revlog code, the code getting the raw text is now isolated. We take advantage of this to simplify the bundlerepo code.

merge with stable

rust: run cargo fmt

py3: use pycompat.maplist() in chgserver test-chg.t almost passes on py3 after this patch. Differential Revision: https://phab.mercurial-scm.org/D6771

run-tests: handle --local before --with-hg We no longer support them both together, so this is now safe to do. By checking --local first, we avoid error out about an invalid --with-hg script if --local was also given (we instead tell the user that the options are mutually exclusive). I also had to wrap the 'binpath' we pass to setattr() in _strpath() to keep `python3 run-tests.py -l` working. That change also made `python3 run-tests.py -l --chg` work, which was the reason for this series. Differential Revision: https://phab.mercurial-scm.org/D6760

run-tests: error out on `--local --with-[c]hg` I don't see much reason to allow these combinations. You could use --local and override only one of --with-hg or --with-chg, but I don't see much practical use for that. It would be easy to work around anyway by passing both --with-hg and --with-chg. By erroring out, it makes the code a bit easier to reason about to allow the next few patches. Differential Revision: https://phab.mercurial-scm.org/D6759

contrib: simplify the genosxversion.py command to find the hg libraries I forget what problem I ran into while trying to teach the makefile to use a non-system python. (It might have ben missing hg-evolve and/or keyring, but `check_output()` was raising an error.) This still isn't great because it will return non zero for something like the username not being set, even though we aren't asking for it. But I suppose it's still useful to simplify. Differential Revision: https://phab.mercurial-scm.org/D6753

interfaceutil: move to interfaces/ Now that we have a dedicated folder for interfaces, let's move interfaceutil there. Differential Revision: https://phab.mercurial-scm.org/D6742

interfaces: create a new folder for interfaces and move repository.py in it I was trying to understand current interfaces and write new ones and I realized we need to improve how current interfaces are organised. This creates a dedicated folder for defining interfaces and move `repository.py` which defines all the current interfaces inside it. Differential Revision: https://phab.mercurial-scm.org/D6741

narrow: fix typo "respositories" Differential Revision: https://phab.mercurial-scm.org/D6758

merge with stable

merge: hint about using `hg resolve` for resolving conflicts This was suggested by one of our users at Google. Makes sense to me. Differential Revision: https://phab.mercurial-scm.org/D6755

rust-dirstate: remove test case for DirsMultiset::new(Manifest, Some) It's no longer possible.

rust-dirstate: split DirsMultiset constructor per input type Since skip_state only applies to dirstate, it doesn't make sense to unify these constructors and dispatch by enum.

rust-dirstate: remove excessive clone() of parameter and return value I think pass-by-ref is preferred in general.

rust-dirstate: handle invalid length of p1/p2 parameters It uses match syntax since map_err() failed to deduce the argument type.

rust: simply use TryInto to convert slice to array Since our rust module depends on TryInto, there's no point to avoid using it. While rewriting copy_into_array(), I noticed CPython interface doesn't check the length of the p1/p2 values, which is marked as TODO.

rust-dirstate: use PARENT_SIZE constant where appropriate

rust-dirstate: rename NULL_REVISION to NULL_ID which isn't a revision number

rust-dirstate: remove repetition in array literal

rust-dirstate: remove too abstracted way of getting &[u8]

rust-dirstate: remove unneeded "ref" At 7cae6bc29ff9, .to_owned() was rewritten as .to_owned().to_vec(), which is no longer needed since the filename is a single reference.