bug#26544: [PATCH v4 00/10] system: Move "--load" and other guix-specific parameters from the grub module to the generic system module.

[Danny Milosavljevic]

I'll hold off merging the other patches in the series until more time for 
review has passed (and more testing has been done).

I've merged the first two patches since they are just self-contained renames we 
have to do anyway.

If you have the time (and a way to recover a potential non-booting system - 
although it works for Mathieu and me), please test.