Change gae to apache 2 license.

impl/memory/datastore_query.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 memory
 
 import (
         "bytes"
         "encoding/base64"
         "errors"
         "fmt"
 
         ds "github.com/luci/gae/service/datastore"
@@ skipping 256 matching lines @@
                 // and the new value has overflowed this representation.
                 //
                 // Fortunately, the first byte of a serialized index column entry is a
                 // PropertyType byte, and the only valid values that we'll be incrementing
                 // are never equal to 0xFF, since they have the high bit set (so either they're
                 // 0x8*, or 0x7*, depending on if it's inverted).
                 impossible(fmt.Errorf("incrementing %v would require more sigfigs", bstr))
         }
         return ret
 }