syslinux: fixed live_rw configuration

The initial revision was brilliantly buggy: it is *so* apparent
that cdrom will never be actually used for rw slice that this
has evaded my attention rather completely.
regular.mk: regular-sysv-tde tweaks

It lacked base desktop packages indeed; thanks Speccyfighter
for naming rsync and wget (as well as mc).
regular.mk: dropped kdegames from tde mixin

mixin/regular-tde is used in sysv-tde flavour which has hit 700M
limit for CD-R as Speccyfighter has noted; we can do without games
probably, or at least let's try to.

http://lists.altlinux.org/pipermail/community/2014-January/681534.html
install2: add installer-common-stage3

This package has replaced installer-feature-setup-network-stage3
without declaring that; it appears that installer-distro-altlinux-*
don't require it even if most of the others do.

This is to ensure it's included, at least at the moment.
rescue+extra: added idle3ctl

This one is intended for WD Green drives so as to bring
their spindown timeout into some kind of sanity;
see also http://bugs.etersoft.ru/9438
live, net-eth: add DHCP_TIMEOUT when appropriate

It's hardwired at 1/10 of the default /etc/net value
since 3 seconds are enough for properly functioning
DHCP servers in properly maintained networks (those
improper ones tend to have problems with 30 seconds
anyways), and waiting for too long makes users feel
bad for a reason.

Thanks msp@ for bringing attention to this.
live.mk: add UEFI support to live-builder.iso

It's just reasonable given that new hardware tends to have that.
base+pkg: added cpio just in case

This is not strictly required but is basically requisite for some
operations with both packages (did you know about rpm2cpio.sh?)
and initramfs images (which are gzipped cpio archives).

So let's put it in.
net-eth: update README

A hint regarding livecd-net-eth is due -- as well as
review and cleanup of live, net, net-eth features
involved in configuring that ethernet for a LiveCD.
syslinux: add 40lateboot.cfg (_after_ ??live*.cfg)

Actually a copy of 10localboot.cfg with a different name
and sorting order so as to address #26608: there's no possibility
to make a LiveCD image that would boot itself by default if localboot
has been configured in.

It's only a partial solution as it doesn't override 10localboot
in case it's there already but a step in that direction...
live: use lateboot for textinstall

use/live/textinstall target is a base for those images whose
target audience tends to be somewhat more experienced; these
might prefer to just boot off the image instead of having to
perform any extra action like pressing down arrow and enter.

This is also to help msp@'s homeros-*.iso boot immediately.
1.1.23-alt1

- live, net*, syslinux fixes (see also #26608)
gear-store-tags