revlog: add some documentation to the `checksize` method I had to look at it, so I figured I would leave some documentation for the next person seeking information.

verify: make `checkentry` a private method This method is for internal use only.

verify: document the `checkentry` method This method checks various core propertes of a revision. We document inputs, outputs and the checks performed.

verify: add some inline documentation to the top level `verify` method The goal is to clarify each section goal.

verify: explicitly return 0 if no error are encountered Relying on the fact None is treated as 0 by other logics seems smarter than we should be.

verify: minimal documentation for `verifier.verify` I expect the docstring to grow over time, so lets start small.

verify: make the `exc` method private The method is for internal use only.

verify: document the `exc` method Simple method, get simple documentation.

verify: make `err` a private method The method is for internal use only.

verify: document the `err` method Simple method get simple documentation.

verify: make the `warn` method private The method is for internal use only. Let us make that fact clearer.

verify: document the `warn` method This is the first bit of an effort to document and augment the verify code.

uncommit: add flag --allow-dirty-working-copy This adds a flag `--allow-dirty-working-copy` as an alias for the experimental config option `experimental.uncommitondirtydir`. Differential Revision: https://phab.mercurial-scm.org/D6069

uncommit: don't allow dirty working copy with PATH (issue5977) On a dirty PATH, uncommit was working without even setting the config `experimental.uncommitondirtydir` to `True`. Ideally, it should abort as it does for a dirty dir. This patch makes uncommit to require the config option `experimental.uncommitondirtydir` on a dirty PATH. Original patch to evolve extension authored by Dan Villiom Podlaski Christiansen: https://bitbucket.org/octobus/evolve-devel/pull-requests/8/bug-5977-uncommit-dirtiness/diff Differential Revision: https://phab.mercurial-scm.org/D5940

cleanup: remove two bogus test names from python3 list I suspect one of these was a typo from the start, the other appears to have become a .t test at some point. Differential Revision: https://phab.mercurial-scm.org/D6076

revlog: preserve `_lazydelta` attribute in `revlog.clone` The attribute was introduce in 688fc33e105d, Yuya Nishihara pointed out that this preservation was missing. This changeset fixes the preservation and make sure we set the attribute according the modes.