Elbrus 101-PC was initially supported through kernel
modesetting driver only, now it's got a sort of native
driver running on ALT too.

This one will be handled by MCST at the moment.

...which will only result in a FAILED message,
most probably the solitary one throughout the
whole sysvinit boot.

The goal was simple: every use/e2k/{x11,install2}/$MACHINE
must be self-sufficient regarding platform support, that is
it must depend on the corresponding CPU-specific target.

A bit less make-tech but still better overall.

NB: llvm cleanup is not needed anymore after upgrade to
    Mesa-17/llvm-3.7, should be dropped like this year.

Forgot to do that before merging, sorry.

(xorg-drv-ati cares for dependencies
but we still prefer modesetting driver
in the installers to make them versatile)

Elbrus-801 and -101 are now added; 401's support refactored
and modified to cover 4.4 server system as well.

It's legit here as I know no Elbrus users among
non-Russian-speakers, at least so far; should move
to generic l10n feature (which will definitely see
its glory by then).

This is to avoid extra actions when one actually needs
KOI8-R (which is still hardwired in some lcc messages).
Should all be rolled into l10n feature some day...

The early scheme consisted of boot.conf template
with a separate hook filling it in; this was nice
for serial console setup script which could just
amend the kernel command line as needed _but_
this got changed towards the more generic scheme
(breaking the hook in question, unfortunately).

This one supports multiple kernels (and tweaks boot
labels aiming to simplify target kernel selection
for the CPU at hand) instead of an earlier attempt
to fill in a template.

No need for the template so just drop it.

Weird it got overlooked in the first place.

Radeon HDMI as the default soundcard isn't really optimal,
and trying to push 44100 kHz samples towards 48 kHz interface
isn't going to sound great; provide sane ALSA dmix defaults
for Elbrus-401 PC workstation.

The early builds used to rely upon a non-committed
rootfs/files/etc/X11/xorg.conf within this feature
which was a bit annoying and would have screwed an
Elbrus system based on any other GPU.

So let's provide some flexibility by packaging it.

Elbrus 2000 only takes us a few lines to get up and running ;-)