revset: mark evolution-related revsets as experimental Differential Revision: https://phab.mercurial-scm.org/D416

push: fix docsstring Seems the code block misses `::`. This patch makes sure `[push]` and `pushvars.server = true` are in two lines. Differential Revision: https://phab.mercurial-scm.org/D411

py3: select input or raw_input by pycompat This seems slightly cleaner.

py3: make encoding.strio() an identity function on Python 2 It's the convention the other encoding.str*() functions follow. To make things simple, this also drops kwargs from the strio() constructor.

templatekw: specify plural form of instability Follows up 40739aef97f7.

templatekw: rename termwidth() per convention

rebase: optimize "source" calculation in adjustdest The "source" variable is calculated inside a loop but it does not depend on loop variables. Therefore move it outside the loop. Differential Revision: https://phab.mercurial-scm.org/D345

rebase: remove "state >= revtodo" condition Now the minimal value of state is revtodo, that condition is always true, therefore removed. Differential Revision: https://phab.mercurial-scm.org/D344

rebase: remove self.destancestors The state is no longer used after calculating "self.external", therefore removed. Differential Revision: https://phab.mercurial-scm.org/D343

rebase: remove rebaseset from _checkobsrebase The parameter is not used. Therefore removed. Differential Revision: https://phab.mercurial-scm.org/D85