To remove rescue packages after live installation.

Now it can be done (extra packages will be removed during
installation).
For systemd only.

They will be installed livecd-rescue-base-utils.

This allows to add a target to distributions that are installed
from squash (the package and its dependencies will be removed).

Since p11 locale C.UTF-8 is part of glibc-core.
For older branches C.UTF-8 is part of glibc-locales.

The list can be use in live without Rescue.
Package livecd-rescue has a dependency on rescue-launcher.

The image already contains systemd-networkd, so it makes sense to
add systemd-timesyncd.

Now in live-rescue required to enter root login.
Empty pawwd for root is default for live.

This reverts commit 186e1a73.
If livecd-user is installed at it is dangerous, can connect via ssh
to root with any password.

It seems unnecessary...
As well wimtools depends on syslinux.

Link: https://bugzilla.altlinux.org/52904

To build initrd from live if necessary.

Now qmmp is qmmp2 (qt6).

Set locale C.UTF-8 in sub.in/rootfs/00-lang-C (fallback).
When use/l10n set locale in rootfs/image-scripts.d/50-l10n-sysconfig.

Otherwise only en_US will be available.

NB: GRUB_SERIAL_COMMAND no need to configure on non-x86 platforms.

Do not use locale of ssh clients.
We only have a couple of locales available.

Now the default locale is C.UTF-8. This is what need.

Must be added together with the livecd-setlocale package
(list tagged/desktop+live).

Now C.UTF-8 in glibc, but not in p10.

This reverts commit d359efb0.

We only have a couple of locales available.

This reverts commit a7b7f34b.
This was too much. We just need to leave the C locale as well.

apt-get autoremove is deleted, after which building failed.

After a few months, the disk repository may become incompatible
with online repositories and cause problems.

This is expected behavior for Live. Cleanup it by default. Disable
cleanup as needed.

Kind=!* - this means that the interface is not a child of any bridge,
bond or tunnel.

This is a cumulative patch starting with
a typo fix and ending with intentation fix,
but there's a missing "-n" bugfix in the middle
along with assorted stylistic improvements
(at least to me :).

"condition && action" lines tend to be less readable
when conditions and/or actions become more than a few
characters (especially when these come in packs);

condition &&
	action

form is less prone to some forms of human errors, and

if condition; then
	action
fi

is a guard against "just add one more action"
which gets added *unconditionally* often when
the original construct was meant as a one-liner
with strictly one action.

Making code fit 80 columns helps fit more tall xterms
horizontally when merging that code, and less than four
tends to be harmful for merge performance (takes two
FullHD displays or a 4K one for me these days).

This allows us to add menu items to the menu that cannot be specified
based on the external features of the files contained in the image.
For example, the item 'live' of boot in rescue mode.
In the future, it will be possible to remake generators for syslinux
and grub using a similar principle.

stage2 image semantics have changed with live/altinst merge.
Thanks Michael Shigorin.