add(dev-vcs/repo): Add ebuild for repo wrapper script.
churn(coreos-dev/coreos-dev): Clean up dev package list a little.
feat(coreos-base/coreos-dev): Add repo to dev images/containers.
feat(coreos-devel/sdk-depends): Add repo to SDK tarballs
Merge pull request #638 from marineam/repo

Install repo wrapper in SDK and dev images