Integrate new structure into docker's native driver

This duplicates some of the Exec code but I think it it worth it because
the native driver is more straight forward and does not have the
complexity have handling the type issues for now.
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)

system/unsupported.go

@@ -3,6 +3,7 @@
 package system
 
 import (
+	"os"
 	"os/exec"
 )
 
@@ -23,3 +24,7 @@ func GetClockTicks() int {
 	// just return 100
 	return 100
 }
+
+func CreateMasterAndConsole() (*os.File, string, error) {
+	return nil, "", ErrNotSupportedPlatform
+}