Installation images renamed from .fs to .img

In a commit touching quite a few files, Theo recently renamed the installation images from installXX.fs to installXX.img:

Date: Sun, 17 May 2020 11:04:29 -0600 (MDT)
From: Theo de Raadt <deraadt@openbsd.org>
To: source-changes@openbsd.org
Subject: CVS: cvs.openbsd.org: src

CVSROOT:        /cvs
Module name:    src
Changes by:     deraadt@cvs.openbsd.org 2020/05/17 11:04:29

Modified files:
        distrib/alpha/miniroot: Makefile
        distrib/amd64/iso: Makefile
        ...
        bin/dd         : dd.1
        usr.sbin/ldomctl: ldomctl.8

Log message:
Change install images called *.fs to *.img.  These are UFS filesystem images,
but additionally have a bootblock in the first 8K (since UFS does not use that
space).  There are some UEFI direct-from-internet bootloaders that require
the name *.img.  So this makes things more convenient for those, while keeping
it consistant in all architectures.
ok kettenis beck kn

This means that with recent snapshots, you should use the .img file to prepare your installation medium, where you were previously using the .fs file. It also means that you can install 'direct-from-internet' on these fancy UEFI machines! Note that if you want to install the OpenBSD 6.7 release, you still need to use install67.fs.