all: sort imports

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5319072
diff --git a/src/pkg/xml/marshal_test.go b/src/pkg/xml/marshal_test.go
index 59007b3..a6f7d2d 100644
--- a/src/pkg/xml/marshal_test.go
+++ b/src/pkg/xml/marshal_test.go
@@ -5,11 +5,11 @@
 package xml
 
 import (
-	"reflect"
-	"testing"
 	"bytes"
-	"strings"
+	"reflect"
 	"strconv"
+	"strings"
+	"testing"
 )
 
 type DriveType int