Add more specific lvm2 version to PACKAGERS document

I personally tested this using our container, and this was the lowest version that compiles and runs properly.

Docker-DCO-1.0-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Fix registry pushing/tagging

* docker push host:port/namespace/repo wouldn't push multiple tags for
  the same image
* getImageList was unnecessarily complex returning a nested array of
  ImgData when a correctly ordered list of images was sufficient
* removed various bits of redundancy

Docker-DCO-1.0-Signed-off-by: Danny Yates <danny@codeaholics.org> (github: codeaholics)
Remove unneeded DependencyGraph

Docker-DCO-1.0-Signed-off-by: Danny Yates <danny@codeaholics.org> (github: codeaholics)
Further simplification

Docker-DCO-1.0-Signed-off-by: Danny Yates <danny@codeaholics.org> (github: codeaholics)
Fix indentation to match rest of file (tabs, not spaces)

Docker-DCO-1.0-Signed-off-by: Danny Yates <danny@codeaholics.org> (github: codeaholics)
gofmt

Docker-DCO-1.0-Signed-off-by: Danny Yates <danny@codeaholics.org> (github: codeaholics)
Fix misspelled Hawkings -> Hawking, Archimede -> Archimedes, Euclide -> Euclid

Docker-DCO-1.0-Signed-off-by: Cory Forsyth <cory.forsyth@gmail.com> (github: bantic)
Removed the 5th clause

Removed clause which states contributions should be relicensed
Fix layout
Bump DCO version
Update Travis to check for new 1.1 DCO version

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Update DCO git hook example
Merge pull request #3522 from bantic/fix-misspelled-names

Fix misspelled Hawkings -> Hawking, Archimede -> Archimedes, Euclide -> Euclid
Merge pull request #3527 from keeb/add-dco

Amend DCO
Merge pull request #3528 from tianon/update-travis-dco

Update Travis to check for new 1.1 DCO version
Merge pull request #3530 from creack/update_dco_doc

Update DCO git hook example
Remove volumes on docker run -rm

If we don't care about the container then we don't care about any
volumes created with the run of that container

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
CONTRIBUTING.md: wrap DCO to 78 chars per line

The DCO is a bit hard to read on Github right now because there is lots
of horizontal scrolling. Reformat it to 78 chars per line like the rest
of the file.

Example: http://imgur.com/LtJEIsl

Docker-DCO-1.1-Signed-off-by: Brandon Philips <brandon.philips@coreos.com> (github: philips)
Don't compress the archive made from git's output.

Commit 894d4a23fba made BuildFile use TarSum, which doesn't support
compressed tar archives.
This breaks builds from git url, which compressed it with bzip2.
Instead, just pass it uncompressed.

Docker-DCO-1.0-Signed-off-by: Paul Lietar <paul@lietar.net> (github: plietar)
Merge pull request #3535 from plietar/3457-git-build

Don't compress the archive made from git's output.