Squashed 'utils/box-installer/' changes from e5fec5b..3baa7ce

3baa7ce fixes issues for build-image environment

git-subtree-dir: utils/box-installer
git-subtree-split: 3baa7cef834d49b1789d74dfd880b0cf38f0df4e
Merge commit '880b5412f996d2b49a07b1f99fc8733041fe84f6'
take account of $$PKG_ROOT in postinst of extendRoot
version for proper package
fixes path for lighttpd