phase: use a binary phase part to push through bundle2 (BC) The part we are using for pull is now used for push too. As we no longer use pushkey, pushkey hooks are no longer triggered. This is an obvious backward incompatible change. We could artificially trigger the pushkey hook within the bundle2 part, but this seemed too hacky to me. An option would be to disable by default this new mechanism for a couple of versions to help people migrate to `txnclose-phase`. I took the liberal and optimistic path to just turn it on by default directly. .. bc:: Push no longer triggers a pushkey hook when updating phases. Use the new `txnclose-phase` and `txnclose-phase` hooks instead. (Applies when both server and client use version 4.4 or above).

arbitraryfilecontext: skip the cmp fast path if any side is a symlink `filecmp` follows symlinks by default, which a `filectx.cmp()` call should not be doing as it should only compare the requested entry. After this patch, only the contexts' data are compared, which is the correct contract. This is a corrected version of D1122. Differential Revision: https://phab.mercurial-scm.org/D1165

test-clang-format: new test to verify that files stay clang-formatted For now all .c and .h files are blacklisted. As they become clang-formatted, we'll remove them from the blacklist,and then this test will produce output if there are diffs. Differential Revision: https://phab.mercurial-scm.org/D1133