persistent-nodemap: disable it unconditionally for test-ssh-proto-unbundle.t This is not relevant for the test and this will avoid a lot of variations. Differential Revision: https://phab.mercurial-scm.org/D10335

persistent-nodemap: disable it unconditionally for test-ssh-proto.t This is not relevant for the test and this will avoid a lot of variations. Differential Revision: https://phab.mercurial-scm.org/D10334

persistent-nodemap: disable it unconditionally for test-share-safe.t This is not relevant for the test and this will avoid a lot of variations. Differential Revision: https://phab.mercurial-scm.org/D10333

persistent-nodemap: disable it unconditionally for test-http-protocol.t This is not relevant for the test and this will avoid a lot of variations. Differential Revision: https://phab.mercurial-scm.org/D10332

persistent-nodemap: disable it unconditionally for test-http-bad-server.t This is not relevant for the test and this will avoid a lot of variations Differential Revision: https://phab.mercurial-scm.org/D10331

clang-format: run the formatter on mercurial/cext/revlog.c This fix `test-check-clang-format.t` that has been complaining for a while. Differential Revision: https://phab.mercurial-scm.org/D10327

revlog-compression: use zstd by default (if available) As see in changeset bb271ec2fbfb, zstd is 20% to 50% faster for reading and writing. Use take advantage of the new config behavior to try zstd by default, falling back to zlib is zstd is not available on that plateform. Differential Revision: https://phab.mercurial-scm.org/D10326

rhg: make rhg recognise it supports zstd compression for revlogs It already did, but was not aware of it. Differential Revision: https://phab.mercurial-scm.org/D10324