simplemerge: replace `**opts` passed to `simplemerge()` by keyword arguments The `simplemerge` module is library code; it should not get an unmodified `opts` dict from the `simplemerge` extension. Differential Revision: https://phab.mercurial-scm.org/D12152

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