systemd is a tricky beast: getting it to actually launch gdm
required considerable effort on the part of stupid myself.

The relevant links:
* https://wiki.archlinux.org/index.php/Systemd#Running_DEs_under_systemd
* http://unix.stackexchange.com/a/35626/15296

Still looks pretty dirty, and there's some duplication
with a hook in features.in/slinux as well.

This was requested by aris@ for live-gnome.iso but is so far
reasonable enough to do by default: the case of a LiveCD
including X and a display manager but willing to get on
with startx by default is rather nonexistant by now.

- regressions--

Thanks go to ildar@ for spotting this: my ~/.mkimage/profiles.mk
routinely contains DEBUG = 1 line which effectively masked this
regression in commit 307fb51f.

Wouldn't be a big deal but syslinux.iso is recommended in
tutorial docs being slim and fast-building, and it's also
what's buildable locally in live-builder.iso environment.

ildar@ noted that the test involving whitespace is too
quirky for some quirky enough cases like

  rpm-dir file:/var/cache/apt/archives . x86_64

-- let's introduce word boundaries there.

*Of course* the "weird" [ ... ] || ... construct meant to avoid
the non-zero exit status of the whole thing wasn't employed
where it actually does make the difference!

Thanks ildar@ for hitting and reporting this, as in

  + verbose '/usr/lib64/propagator exists'
  + '[' -n '' ']'
  mki-scripts: .../stage1/scripts.d/80-make-initfs: unable to run script.
  make[3]: *** [run-scripts] Error 1

The newer kernels have versioned NFS support code moved
into a few separate modules with nice self-explanatory
messages reading "Protocol not supported" if one has
managed to overlook this; thanks boyarsh@ for heads-up
(based on f545923271f9d1938d1887632ab4697c4c009039 m-p-d).

- docs subpackage (HTML/PDF book)

The initial sketch did work but was somewhat redundant
while lacking the knob conveniently change output directory
as well as means to get it cleaned up.

Thanks torabora@ for the tip along with reference to his
http://altlinux.org/asciidoc page.

Docs should live happily together, after all,
and toplevel should be more or less uncluttered :)

Adjusted/rewrote as appropriate as well.

It was actually an experiment leftover and spoils
toplevel completion so let's drop that one, just
as mentioned by torabora@.

It's not fun to boot into a livecd just to find that
there's no lspci around!

- diffable logs
- AMD APU support

There's no gtk2-themes-qtcurve package in Sisyphus at the moment;
let's fix image build until it's back again (if it ever is).

This is thanks to the fact that alterator-based install2 needs
alterator-browser-qt which needs X11 which needs working device drivers
-- and at least AMD C60 APU would only yield a nice dotted white screen
without that firmware.

Roughly the same for X11 bearing LiveCD images.

The rationale for the former is that the image gets slightly
more compact (although the current sisyphus build is way larger
than the t6/branch build of the optimization time, need to look
into that...); and for the latter it's to provide yet another
installer with a different enough kernel so that there's one more
chance in a weird situation.

Thanks boyarsh@ for a hint that VM-emulated cirrus VGA
actually requires xorg-drv-modesetting when used
with recent kernels.

Actually just a split of livecd-webkiosk into the kiosk related
part and generic livecd firefox setup (turning off queries that
are pretty useless in that environment).

Yet another rename, sigh.  The release is worth the trouble though.

This is a mild generalization of what has been done by hand
to figure out a problem with make-initrd-propagator-0.10-alt1:
stripping anything intrinsically volatile off the build.log.

The filter set isn't perfect, and the proper logging will
involve mkimage tweaks as well (e.g., one generally isn't
interested in instrumental chroots' population that much,
so it should only be verbose at the higher debug levels).

- worked around enhancements in current make-initrd-propagator
  (thus fixed live image boot, finally)

The issue that appeared pretty hard to diagnose occured
to be the enhancement made in make-initrd-propagator=0.8.1-alt1.2
(that didn't hit Sisyphus until merged into 0.10-alt1) which
drops propagator dependency.

And that was optimized out in m-p, of course.

- make-3.82 support
- fixed live image boot to some extent (see #27640, #27852)

The added pdir check was a hillarious(tm) overlooked bug indeed:
I tried to put .../initfs/initfs instead of .../initfs as the result.

Duly spotted by torabora@, thanks a lot.

Still the kmod+propagator+kernel-image combo needed some tweaking too,
see #27640

A tiny bit less cut-n-paste. :)

The issue actually hit image.in/Makefile: "metadata" target
in features.in/metadata/lib/50-metadata.mk wasn't reached
even if features.in/build-distro/lib/90-build-distro.mk
would ACK that the "whatever" actions included "metadata";
thus Metadata/pkg-groups.tar wasn't created and the installer
silently failed to install the .base system.

Let's armour the rest of the cases where the order of inclusion
might be important as well.

The culprit would be that $RELNAME isn't really set there
($GLOBAL_RELNAME is), and sh -u will treat that as error.

It's pretty ugly but dropping the current way
means losing the dependency tracking which is
critical to get the required alterator module
into install2.

- fixed build with recent make-initrd-propagator

Thanks mithraen@ for spotting, boyarsh@ for explaining,
and legion@ for hearty support :)

The problem would manifest itself like this:

  /.host/script.sh: line 20: /usr/lib64/propagator/initfs: \
  No such file or directory
  mki-scripts: .../stage1/scripts.d/80-make-initfs: unable to run script.