Merge pull request #78 from philips/cleanup-bootengine

fix(coreos-base/bootengine): change to build single image
Merge pull request #79 from philips/remove-root-hack

fix(coreos-base/bootengine): don't hardcode ${ROOT}
chore(vboot_reference): strip out a lot of unneeded logic

we essentially only use vboot_reference for cgpt right now. Strip
everything else out.
feat(coreos-base/vboot_reference): bump to get cgpt next

bump to get the cgpt next utility
Merge pull request #81 from coreos/bump-vboot-ref-for-cgpt-next

Bump vboot ref for cgpt next
chore(coreos-installer): fixup the header details
feat(coreos-installer): install coreos- prefixed commands
fix(coreos-installer): fixup deps in -9999 ebuild

the verity package moved to coreos. Fix.
chore(coreos-installer): use the symlink style versioning
bump(coreos-installer): get the lastest version

this introduces the new coreos-setgoodroot code
bump(update_engine): use coreos-setnextroot