evolve: respect command-templates.oneline-summary if configured Mercurial has a new `command-templates.oneline-summary` config that is respected by `hg rebase`, `hg phabsend`, and the bundled version of `hg split`. This patch makes `hg evolve` also respect it. Unlike the upstream commands, I let `hg evolve` use the existing template by default. The reason I didn't change the default is that we have a different template when topics are enabled and it's unclear how that should work with the default from upstream. So at least for now, the user will have to explicitly set the new config if they want it to apply to `hg evolve`.