Change gae to apache 2 license.

service/datastore/properties.go

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
+// Copyright 2015 The LUCI Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
 
 package datastore
 
 import (
         "bytes"
         "encoding/base64"
         "errors"
         "fmt"
         "math"
         "reflect"
@@ skipping 968 matching lines @@
                 if string(s) == string(t) {
                         return 0, true
                 }
                 if string(s) < string(t) {
                         return -1, true
                 }
                 return 1, true
         }
         return 0, false
 }