py3: add r'' prefixes to fix kwargs handling in hgext/sparse.py
This fixes two of sparse tests which were failing on Python 3.
# skip-blame because just r'' prefixes
Differential Revision: https://phab.mercurial-scm.org/D3634
@echo off
powershell -NoProfile -ExecutionPolicy unrestricted -Command "& '%~dp0\editmergeps.ps1' %*"