scripts/liram-manage: fixup
scripts: move liram-manage to liram/ subdir
lib/initramfs: fixup

flip some conditions, append text to files and don't overwrite them, etc.
lib/devel/shlib: scriptvars: lib_root

get_lib_dest() in scriptvars: handle lib_root properly (don't produce
double-slashes if lib_root is empty)
scripts/liram: pack_tv

An example pack script that creates most images (all except "scripts") for
liram's "tv" layout. It is expected to be run in the target system (build
chroot or the actual target). Note that it creates a non-self-updateable
system, for example it removes sys-apps/portage and /usr/include/.
build-scripts, busybox-initramfs: add /dev/tty
update tv recipes and Makefile

"make tv-all" can now be used to create an initramfs, the pack script for the
build system and the scripts tarball for the target system.