These changes allow you to create two independent config at the same
time or separately. It will be possible to add support for grub-pc in
the future.

The definition of the default menu item has been fixed.
Grub.cfg does not use label, uses --id.
It is assumed that --id is given last.

Not needed Stage1 package. They are added to mkimage.

The scripts were named the same for syslinux and grub. Because of this,
scripts for syslinux were overwritten by grub scripts.

NetworkManager not worked without udev-rule-generator-net on sysvinit

Many applications need a gnome-icon-theme.

Reported-by: Speccifighter
See-also: https://forum.altlinux.org/index.php?topic=42738.msg344544#msg344544

See-also: https://lists.altlinux.org/pipermail/devel/2019-December/209313.html

See-also: commit e4bb1727

See-also: https://forum.altlinux.org/index.php?topic=43385.msg345596#msg345596

Needed for running installer.

Reported-by: Speccifighter
See-also: https://forum.altlinux.org/index.php?topic=42738.msg344544#msg344544

Нужно признать, что grub станларт, которму мы должны соответствовать.
а поддержка efi у нас полноценна пока только в refind.

Also added explicit call +sysvinit or +systemd for server targets.
Users also want to start the server on systemd.
in addition to on aarch64 in qemu, the shell does not start on the
serial console for sysvinit. This is critical for non-desktop builds.

.regular-sysv -> .regular-desktop-sysv
.regualar-sysv-gtk -> regular-gtk-sysv

- replace easypaint in desktop+lxqt, builded with qt5
- cleanup qt4 applications
- drop cool-retro-term (it is certainly cool, but not required)
- clementine allowed for all platforms

See-also: https://forum.altlinux.org/index.php?topic=43220.0

After switching to these symlinks, you no longer need to create
the missing directories.
See-also: https://bugzilla.altlinux.org/show_bug.cgi?id=35350

Not needed for polkit-sysvinit >= 0.4

This one has filled up the entire 8 Mb tmpfs
while running inside installer stage1 on a
124-drive system (configured as JBOD).

Reported-by: http://norsi-trans.ru

...for zgrep and friends; might be worth including into
distros proper by default.

Still commented out, though; maybe someone pays attention later on.

fwupd needs python3-module-pygobject3 which requires graphics libraries
(unacceptable for the basic rescue images).

Install /etc/*-release files if needed.
Reported-by: Ivan A. Melnikov <iv@altlinux.org>

Make it uniform through a function -- with the initially desired effect
of no extra lines while building multiple images with REPORT=1
(those were useless anyways printing repeatedly the same path
that's relative to a particular builddir).

...as cloud-init will do that.