merge-actions: add an explicite "no_op" attribute
This make the MergeAction smarter and able to describe themself. This is useful
to help introducing more MergeAction object that better the complexity of the
situation.
Differential Revision: https://phab.mercurial-scm.org/D12116
@echo off
powershell -NoProfile -ExecutionPolicy unrestricted -Command "& '%~dp0\editmergeps.ps1' %*"