templatekw: switch revset() to new API

templatekw: switch obsfate-related template keywords to new API

templatekw: switch namespace template keywords to new API

namespace: use registrar to add template keyword Prepares for switching to the new API.

templatekw: switch most of showlist template keywords to new API (issue5779) Non-trivial changes will follow.

templatekw: switch showdict template keywords to new API

py3: bail on ratcheting tests forward on 3.6.0 and 3.6.1

py3: silence "bad escape" warning emitted by re.sub() Since we pass user strings directly to re.sub(), we can't avoid this warning without a BC.

debugcommands: add some strkwargs love to some **args calls Differential Revision: https://phab.mercurial-scm.org/D2563

debugcommands: add an r prefix to make file mode for fdopen a sysstr # skip-blame just an r prefix Differential Revision: https://phab.mercurial-scm.org/D2562

util: work around Python 3 returning None at EOF instead of '' Differential Revision: https://phab.mercurial-scm.org/D2561

util: add missing r prefix on some __setattr__ calls # skip-blame just a pair of r prefixes Differential Revision: https://phab.mercurial-scm.org/D2560

tests: add some re and globs for test-revset on python3 At this point we're down to two deprecation warnings (which I suspect are showing a bug in the test?) and one weird-looking failure. Progress! Differential Revision: https://phab.mercurial-scm.org/D2559

tests: add missing b prefixes and fix a %s to %d in test-revset.t # skip-blame just b prefixes and a %d instead of %s Differential Revision: https://phab.mercurial-scm.org/D2558

revset: use %d to turn an int into a bytestr Differential Revision: https://phab.mercurial-scm.org/D2557

revset: use {force,}bytestr to fix some %r formatting issues Differential Revision: https://phab.mercurial-scm.org/D2556

py3: sixteen more passing tests Differential Revision: https://phab.mercurial-scm.org/D2552

debugcommands: fix repr in debugignore print with pycompat.bytestr Differential Revision: https://phab.mercurial-scm.org/D2549

verify: fix exception formatting bug in Python 3 Differential Revision: https://phab.mercurial-scm.org/D2541

get-with-headers: use bytes stdout thoroughly On Python 3, sys.stdout.buffer is backed by a separate buffer from sys.stdout. We should choose one.

exchange: remove dead assignment or forcebundle1 Differential Revision: https://phab.mercurial-scm.org/D2548

templatekw: fix dict construction in _showlist to not mix bytes and strs What we had was fine on Python 2, but was slightly wrong on Python 3. This works on both. Differential Revision: https://phab.mercurial-scm.org/D2554

templatefilters: avoid infinite recursion bug in stringify This doesn't ever happen on Python 2, but it's been a persistent pain on Python 3. Adding this helped produce some of my upcoming Python 3 fixes. Differential Revision: https://phab.mercurial-scm.org/D2553

match: some minimal pycompat fixes guided by test-hgignore.t Differential Revision: https://phab.mercurial-scm.org/D2551

purge: apply byteskwargs to opts, fixing all python3 issues here Differential Revision: https://phab.mercurial-scm.org/D2547

tests: port test-bookmarks.t extension to Python 3 # skip-blame it's just b prefixes Differential Revision: https://phab.mercurial-scm.org/D2546

scmutil: fix a repr in an error message on Python 3 Differential Revision: https://phab.mercurial-scm.org/D2545

bookmarks: fix a repr in a message on Python 3 Differential Revision: https://phab.mercurial-scm.org/D2544

py3: add missing b prefixes in test-debugextensions.t # skip-blame just some b prefixes Differential Revision: https://phab.mercurial-scm.org/D2543

tests: help dummysmtpd work on python 3 Differential Revision: https://phab.mercurial-scm.org/D2542

tests: port helper script revlog-formatv0.py to python 3 Differential Revision: https://phab.mercurial-scm.org/D2540

tests: add missing b prefix in test python in test-issue2137.t # skip-blame just a b prefix Differential Revision: https://phab.mercurial-scm.org/D2539