contrib/editmergeps.bat

localrepo: use str for lookup in vars()

vars() returns a dict of str. So always use a native str for
the key lookup.

Differential Revision: https://phab.mercurial-scm.org/D7227

@echo off
powershell -NoProfile -ExecutionPolicy unrestricted -Command "& '%~dp0\editmergeps.ps1' %*"