graft: rename `pctx` argument to `base` since that's what it is The new name better matches the docstring. It also frees up `pctx` to be used for something else (next patch). Differential Revision: https://phab.mercurial-scm.org/D7547

exchange: replace a "not x in ys" by more Pythonic "x not in ys" Found by one of our (Google-)internal tools. Differential Revision: https://phab.mercurial-scm.org/D7546

packaging: include defaultrc/*.rc instead of default.d/*.rc Differential Revision: https://phab.mercurial-scm.org/D7555

merge with stable

Added signature for changeset a50fecefa691

Added tag 5.2.1 for changeset a50fecefa691

py3: make a pycompat.osdevnull, use it in extdiff Differential Revision: https://phab.mercurial-scm.org/D7545

subrepo: use pycompat.open directly instead of importing open from pycompat Differential Revision: https://phab.mercurial-scm.org/D7544

rust-dirs: address failing tests for `dirs` impl with a temporary fix https://phab.mercurial-scm.org/D7252 (5d40317d42b7083b49467502549e25f144888cb3) introduced a regression in Rust tests. This is a temporary fix that replicates the behavior of the C and Python impl, pending the resolution of the discussion (in the phabricator link) about how we actually want to solve this problem. Differential Revision: https://phab.mercurial-scm.org/D7503

cleanup: fix docstring formatting This is just removing the b'' prefix (except demandimportpy2), and making sure it is triple quoted. I skipped the mapping.py module in zope because that's 3rd party code. Differential Revision: https://phab.mercurial-scm.org/D7539