Bump version to v1.6.0

Docker-DCO-1.1-Signed-off-by: Jessie Frazelle <princess@docker.com> (github: jfrazelle)

CHANGELOG.md

@@ -7,7 +7,6 @@
 + build containers with resource constraints, ie `docker build --cpu-shares=100 --memory=1024m...`
 + `commit --change` to apply specified Dockerfile instructions while committing the image
 + `import --change` to apply specified Dockerfile instructions while importing the image
-+ basic build cancellation
 
 #### Client
 + Windows Support

VERSION

@@ -1 +1 @@
-1.6.0-rc7
+1.6.0-rc6

contrib/init/upstart/docker.conf

@@ -49,7 +49,7 @@ post-start script
 	fi
 	if ! printf "%s" "$DOCKER_OPTS" | grep -qE -e '-H|--host'; then
 		while ! [ -e /var/run/docker.sock ]; do
-			initctl status $UPSTART_JOB | grep -qE "(stop|respawn)/" && exit 1
+			initctl status $UPSTART_JOB | grep -q "stop/" && exit 1
 			echo "Waiting for /var/run/docker.sock"
 			sleep 0.1
 		done

daemon/networkdriver/bridge/driver.go

@@ -7,7 +7,6 @@ import (
 	"io/ioutil"
 	"net"
 	"os"
-	"os/exec"
 	"strings"
 	"sync"
 
@@ -107,13 +106,6 @@ func InitDriver(job *engine.Job) engine.Status {
 		fixedCIDR      = job.Getenv("FixedCIDR")
 		fixedCIDRv6    = job.Getenv("FixedCIDRv6")
 	)
-
-	// try to modprobe bridge first
-	// see gh#12177
-	if out, err := exec.Command("modprobe", "-va", "bridge", "nf_nat").Output(); err != nil {
-		log.Warnf("Running modprobe bridge nf_nat failed with message: %s, error: %v", out, err)
-	}
-
 	initPortMapper()
 
 	if defaultIP := job.Getenv("DefaultBindingIP"); defaultIP != "" {