mergetools: add support for 32-bit BeyondCompare 3 on 64-bit Windows Again, marginal usefulness, but other tools have this config and it eliminates a diff from the TortoiseHg file. Differential Revision: https://phab.mercurial-scm.org/D9634

mergetools: enable the `checkconflicts` option for Araxis Merge This must have been a typo. This matches the config read in filemerge, as well as the TortoiseHg config file. Differential Revision: https://phab.mercurial-scm.org/D9633

mergetools: sync up comments with the TortoiseHg copy of the config file It's of limited value, but a step towards making the diff between the two less noisy. Differential Revision: https://phab.mercurial-scm.org/D9632

rust: introduce Repo and Vfs types for filesystem abstraction This is similar to the corresponding Python classes. Repo represents a repository and knows the path to the `.hg` directory, the `store` directory, and the working directory. Separating these will enable supporting the share extension. A Vfs is created from a Repo for one of these three directories. It has filesystem access APIs that take a relative std::path::Path as a parameter. Differential Revision: https://phab.mercurial-scm.org/D9596

bundle2: drop some outdated comment This commend trace back to a very early bundle2 changeset c7ceae0faf69. And the code moved past this warning over 5 years ago. Differential Revision: https://phab.mercurial-scm.org/D9637

bundle: optional advisory obsolescence parts It is useful to ship obsolescence markers as part of clonebundles or pullbundles, but they shouldn't stop a non-evolution client from working. Differential Revision: https://phab.mercurial-scm.org/D8480

relnotes: document that `hg extdiff` also got -r replaced by --from/--to Differential Revision: https://phab.mercurial-scm.org/D9628

hghave: add some official category for known-bad and missing-good output This will make it simple to tag output that are expected to changes. A simple hghave integration seems enough but smarter behavior around these seems possible in the future. Differential Revision: https://phab.mercurial-scm.org/D9607

copies: rename value/other variable to minor/major for clarity Differential Revision: https://phab.mercurial-scm.org/D9591

copies: extract value comparison in the python copy tracing This mirror what we did in the Rust code. This is useful to prepare rework for this comparison logic that we will need to handle more advanced chaining cases (when merges are chained). Differential Revision: https://phab.mercurial-scm.org/D9590