regular.mk, p7.mk: initial sysvinit tde installer

I've been considering a way to avoid confusion between:
- a tde based livecd with systemd;
- a tde based livecd with sysvinit;
- a tde based installer with sysvinit
and finally came to conclusion that regular-sysv prefix
will be common for installers with sysvinit within regular.mk
and p7.mk; this might be not perfect but should be good enough.

Note that while regular-sysv-tde.iso is buildable and installs
just fine at the moment I don't plan to publish Sisyphus based
installer builds as a rule since these require extra knowledge
regarding daily use (starting with http://altlinux.org/changes
and/or https://lists.altlinux.org/mailman/listinfo/sisyphus ML
subscription).

Sisyphus-based rescue image is fine as well as LiveCDs are;
installable LiveCDs (most of regular-*.iso) are actually
risky in case user actually installs *and* updates those
having ignored the red "unstable" status in the branding,
and that's the line I'm not going to cross that often.

conf.d/p7.mk

@@ -20,6 +20,8 @@ distro/altlinux-p7-tde-sysv: distro/regular-tde-sysv mixin/p7; @:
 distro/altlinux-p7-wmaker: distro/regular-wmaker mixin/p7; @:
 distro/altlinux-p7-xfce: distro/regular-xfce mixin/p7; @:
 
+distro/altlinux-p7-sysv-tde: distro/regular-sysv-tde mixin/p7; @:
+
 distro/altlinux-p7-server: distro/regular-server mixin/p7; @:
 
 endif

conf.d/regular.mk

@@ -106,6 +106,10 @@ distro/regular-rescue: distro/.regular-bare use/rescue/rw \
 	@$(call set,KFLAVOURS,un-def)
 	@$(call add,RESCUE_PACKAGES,gpm)
 
+distro/regular-sysv-tde: distro/.regular-install-x11 \
+	mixin/desktop-installer mixin/regular-tde use/branding/complete \
+	use/net-eth/dhcp use/install2/fs use/efi/refind; @:
+
 distro/regular-server: distro/.regular-install \
 	use/install2/fs use/bootloader/lilo use/server/mini use/luks
 	@$(call add,THE_LISTS,$(call tags,(base || server) && regular))