golint fixes for daemon/ package

- some method names were changed to have a 'Locking' suffix, as the
 downcased versions already existed, and the existing functions simply
 had locks around the already downcased version.
 - deleting unused functions
 - package comment
 - magic numbers replaced by golang constants
 - comments all over

Signed-off-by: Morgan Bauer <mbauer@us.ibm.com>

daemon/restart.go

@@ -2,6 +2,12 @@ package daemon
 
 import "fmt"
 
+// ContainerRestart stops and starts a container. It attempts to
+// gracefully stop the container within the given timeout, forcefully
+// stopping it if the timeout is exceeded. If given a negative
+// timeout, ContainerRestart will wait forever until a graceful
+// stop. Returns an error if the container cannot be found, or if
+// there is an underlying error at any stage of the restart.
 func (daemon *Daemon) ContainerRestart(name string, seconds int) error {
 	container, err := daemon.Get(name)
 	if err != nil {