tests: integrate test-hardlinks-safety.t into test-hardlinks.t Should make running the testsuite a bit faster. Also, test-hardlinks.t and test-hardlinks-safety.t now have enough infrastructure in common.

mq: add an '-e/--exact' option to qpush This patch adds an '--exact/-e' option to qpush that will try to push the patches in the correct location in the DAG. Specifying this option does the following: * If --move is specified, abort. It makes no sense to move a patch to the front of the queue and try to apply it to its parent, because its parent is one of the patches we just moved it in front of! * If patches are already applied, abort. We don't want patch changesets scattered throughout the DAG. * If local changes are present, abort unless --force is used, as usual. * Find the first patch we're going to push (if we're pushing multiple patches with a target or --all). * If that patch doesn't have a parent, abort, obviously. * If the parent doesn't exist in the repo, abort. Something is wrong. * Update to the parent, then continue pushing the patches as normal.

dirstate: warn on invalid parents rather than aborting This allows more graceful recovery from some mangled dirstates

code style: prefer 'is' and 'is not' tests with singletons

polib: remove unnecessary comparisons with True Submitted to upstream repository as changeset f11e0b1b37b0.

subrepo: lazier git push logic Avoids calls to git push when the revision is already known to be in the remote repository. Now, when using a read-only git subrepo, git will never need to talk to its upstream repository.

merge with stable

subrepo: archive git subrepos

check-code: catch Python 'is' comparing number or string literals The Python 'is' operator compares object identity, so it should definitely not be applied to string or number literals, which Python implementations are free to represent with a temporary object. This should catch the following kinds of bogus expressions (examples): x is 'foo' x is not 'foo' x is "bar" x is not "bar" x is 42 x is not 42 x is -36 x is not -36 As originally proposed by Martin Geisler, amended with catching negative numbers.

keyword: s/config/configuration/ in help