Removed docker_io_oauth_api.md: Docker is not currently accepting registrations for third party auth while it's determined how this will be done, if at all, in the future.

Docker-DCO-1.1-Signed-off-by: hollietealok <hollie@docker.com> (github: hollietealok)
Merge remote-tracking branch 'upstream/master' into doc_remove

Docker-DCO-1.1-Signed-off-by: hollietealok <hollie@docker.com> (github: hollietealok)
Removed OAuth doc from mkdocs.yml

Docker-DCO-1.1-Signed-off-by: hollietealok <hollie@docker.com> (github: hollietealok)
Check for OS and root privileges in NewDaemon

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
Move TMPDIR symlink cleanup to NewDaemon

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
Move canonical root path detection to NewDaemon

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
Move kernel version/capabilities detection to NewDaemon

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
utils/tarsum* -> pkg/tarsum

Docker-DCO-1.1-Signed-off-by: Erik Hollensbe <github@hollensbe.org> (github: erikh)
move testdata to tarsum package.

Docker-DCO-1.1-Signed-off-by: Erik Hollensbe <github@hollensbe.org> (github: erikh)
utils.Debugf -> fmt.Printf

Docker-DCO-1.1-Signed-off-by: Erik Hollensbe <github@hollensbe.org> (github: erikh)
Added GA universal analytics support

Docker-DCO-1.1-Signed-off-by: Roberto Hashioka <roberto.hashioka@docker.com> (github: rogaha)
Fix more instances of "dotcloud/docker" in hack/ (and add a DOCKER_PKG environment variable to simplify references to our "package path" in our bundlescripts)

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Merge pull request #7338 from tianon/moar-dotcloud

Fix more instances of "dotcloud/docker" in hack/
docs/google: bump container-vm image version

Docker-DCO-1.1-Signed-off-by: Johan Euphrosine <proppy@google.com> (github: proppy)
Merge pull request #7337 from rogaha/add_ga_universal_analytics_support

Added GA universal analytics support
Update CONTRIBUTING.md with links to sections and RFE process.

Docker-DCO-1.1-Signed-off-by: Erik Hollensbe <github@hollensbe.org> (github: erikh)
Merge pull request #7193 from hollietealok/doc_remove

Removed docker_io_oauth_api.md: Docker is not currently accepting regist...
Merge pull request #7343 from shykes/cleanup-main

Cleanup main function
Merge pull request #7091 from erikh/rfe

Update CONTRIBUTING.md with links to sections and `Proposal:` process.
Merge pull request #7324 from erikh/move_tarsum

Move tarsum to pkg/