test-show: make it compatible with chg The show extension reads `commands.show.aliasprefix` config in its `extsetup` and that causes issues with chg. This patch adds that config item to chg confighash to solve the issue. Test Plan: `run-tests.py -l --chg test-show.t` Differential Revision: https://phab.mercurial-scm.org/D1158

templater: use pycompat.sysbytes to bytes-ify some __name__ attrs Spotted by yuya in review of e87e62b7fc0b. Differential Revision: https://phab.mercurial-scm.org/D1145

templatefilters: defend against evil unicode strs in json filter We only want to do I/O in terms of bytes, so lets explode early instead of recursing forever. Differential Revision: https://phab.mercurial-scm.org/D1136

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).