Update daemon and docker core to use new content addressable storage

Add distribution package for managing pulls and pushes. This is based on
the old code in the graph package, with major changes to work with the
new image/layer model.

Add v1 migration code.

Update registry, api/*, and daemon packages to use the reference
package's types where applicable.

Update daemon package to use image/layer/tag stores instead of the graph
package

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

docs/types.go

@@ -1,5 +1,9 @@
 package registry
 
+import (
+	"github.com/docker/distribution/reference"
+)
+
 // SearchResult describes a search result returned from a registry
 type SearchResult struct {
 	// StarCount indicates the number of stars this repository has
@@ -126,13 +130,13 @@ type RepositoryInfo struct {
 	Index *IndexInfo
 	// RemoteName is the remote name of the repository, such as
 	// "library/ubuntu-12.04-base"
-	RemoteName string
+	RemoteName reference.Named
 	// LocalName is the local name of the repository, such as
 	// "ubuntu-12.04-base"
-	LocalName string
+	LocalName reference.Named
 	// CanonicalName is the canonical name of the repository, such as
 	// "docker.io/library/ubuntu-12.04-base"
-	CanonicalName string
+	CanonicalName reference.Named
 	// Official indicates whether the repository is considered official.
 	// If the registry is official, and the normalized name does not
 	// contain a '/' (e.g. "foo"), then it is considered an official repo.