Hello friends,

I install emacs on Windows using the winget tool. This tool queries
the Windows registry for the current installed version of emacs, but
the NSIS installer does not create the appropriate values resulting in
the current version being reported as 'Unknown.' The attached patch
fixes that and additionally sets the Publisher value to "Free Software
Foundation, Inc."

This prevents winget from reinstalling the same version during every
invocation of 'winget update' but it also improves the appearance of
GNU Emacs in the 'Add or Remove Programs' interface[1].

Kind regards,
Sean

1. https://seanbright.com/emacs-win-metadata.png