Rename namespace driver to docker

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)

execdriver/docker/default_template.go

@@ -1,4 +1,4 @@
-package namespaces
+package docker
 
 import (
 	"github.com/dotcloud/docker/pkg/cgroups"

execdriver/docker/driver.go

@@ -1,4 +1,4 @@
-package namespaces
+package docker
 
 import (
 	"encoding/json"

execdriver/docker/term.go

@@ -1,4 +1,4 @@
-package namespaces
+package docker
 
 import (
 	"github.com/dotcloud/docker/execdriver"

runtime.go

@@ -7,8 +7,8 @@ import (
 	"github.com/dotcloud/docker/dockerversion"
 	"github.com/dotcloud/docker/engine"
 	"github.com/dotcloud/docker/execdriver"
+	"github.com/dotcloud/docker/execdriver/docker"
 	_ "github.com/dotcloud/docker/execdriver/lxc"
-	"github.com/dotcloud/docker/execdriver/namespaces"
 	"github.com/dotcloud/docker/graphdriver"
 	"github.com/dotcloud/docker/graphdriver/aufs"
 	_ "github.com/dotcloud/docker/graphdriver/btrfs"
@@ -704,7 +704,7 @@ func NewRuntimeFromDirectory(config *DaemonConfig, eng *engine.Engine) (*Runtime
 
 	sysInfo := sysinfo.New(false)
 
-	ed, err := namespaces.NewDriver(config.Root)
+	ed, err := docker.NewDriver(config.Root)
 	if err != nil {
 		return nil, err
 	}