configs/baseline/*: Remove the SPDX license identifier comment from the configuration files in the profile, as they are not eligible for copyright.
This is a breaking change. archweb, archiso-manager and various documentation must be updated. * https://github.com/archlinux/archweb/blob/master/templates/releng/archlinux.ipxe * https://github.com/pierres/archiso-manager/blob/master/Makefile
Place custom mkinitcpio.conf in airootfs. Use a custom mkinitcpio preset to specify generated image file path.