At the moment, the ability to select the kernel with which to boot is
implemented only for grub (grub-pc, grub-efi, ieee1275boot).
note that renamed STAGE1_KFLAVOUR to STAGE1_KFLAVOURS, as multiple
kernels can now be added.

This reverts commit 5848ae70.

- build-distro: BOOT_TYPE = BOOTLOADER
- Add the ability to override BOOTLOADER
- grub: restrict graphics mode to architectures i586, x86_64, aarch64
- Add grub-efi support for riscv64 (thanks arei@)
- New feature uuid-iso for create UUID for ISO image (thanks jqt4@)
- Disable sort subprofiles (build stage1 first)
- fonts: Set SYSTEM_FONTS for use/fonts/install2 again
- stage2: Add cmac.ko for use SMB2 and newer
- live.mk: Add distro/grub, fix allowed targets for architectures
- init: Add mount-efivars for sysvinit
- alt-server: fix missing packages in p9
- education: pull new commits

QEMU for riscv virt machine passes its own DTB. Overriding DTB breaks
Linux loading.

ttySI0 was a name of HiFive Unleashed serial console. It was changed to
ttySIF0.

The intention behind this commit to allow user to get all needed stuff
to launch a particular image inside QEMU without need to download the
firmware from the net or in a case of booting procedure change in
future.

Another workaround for https://bugzilla.altlinux.org/show_bug.cgi?id=39663

Education rescue does not require wireless support.

startup soon won't be installed by anyone.

isolinux supports Hardware Detection Tool.

As new exfat filesystem is merged into linux-5.7 kernel, exfatprogs is
created as an official userspace utilities that contain all of the standard
utilities for creating and fixing and debugging exfat filesystem in linux
system. fuse-exfat not needed.

This is necessary for kernels 5.10 and higher on systems with sysvinit,
since no one else on these systems except this service will mount
evivars in /sys/firmware/efi/efivars.

Also needed for livecd.

cmac.ko needed for use SMB2 and newer.
Reported-by: sin@

The base font is needed not only in the installer, but also in the
installed system, since the final steps start alterator from the
installed system.
use/fonts/system leave as an alias.

squashfs built with this option are not loaded with modern kernels.