* Do UEFI PXE boot, see that it doesn't break - DONE.
* Do UEFI HTTP boot, see that loader.conf &c can be fetched over http - DONE.
* Do UEFI boot on system that doesn't support HTTP booting, ensure it doesn't hang trying to open the http protocol - DONE
* Send out a Call For Testing to freebsd-current ML - DONE.