Automatic merge from submit-queue

Update to support latest godep

godep v53 and earlier included all subdirs of includes in ./...
godep v54 and later only includes the exact packages required.

So all of the 'extra' packages which were subdirs but were dead code are removed.

That bit us because both codecgen and ginkgo are binaries which we got by chance in Godeps. When godep started tracking exactly what was needed instead of just grabbing entire subdirs we lost those binaries. To solve that problem godeps now have to be built with `godep save ginko codecgen ./...` so that that it explicitly pulls in those two packages. Because no one will ever remember that, I created a script in hack which lists those deps explicitly.

The better import tacking also means that it lists every single package included (transitively) in Godeps.json. Which I believe makes the godep license concatenator from @karlkfi explode in size.

But from an actual 'code that was built' PoV, and easy way to test is to see if a build with and without this PR have any difference. They should be identical.

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