Fix miscellaneous prod bugs.

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.
 
 package datastore
 
 import (
         "errors"
         "fmt"
         "math"
@@ skipping 188 matching lines @@
         case string:
                 return PTString, nil
         case Key:
                 // TODO(riannucci): Check key for validity in its own namespace?
                 return PTKey, nil
         case time.Time:
                 err := error(nil)
                 if checkValid && (x.Before(minTime) || x.After(maxTime)) {
                         err = errors.New("time value out of range")
                 }
-                if checkValid && x.Location() != time.UTC {
+                if checkValid && !x.Equal(x.In(time.UTC)) {
                         err = fmt.Errorf("time value has wrong Location: %s", x.Location())
                 }
                 return PTTime, err
         case GeoPoint:
                 err := error(nil)
                 if checkValid && !x.Valid() {
                         err = errors.New("invalid GeoPoint value")
                 }
                 return PTGeoPoint, err
         default:
@@ skipping 266 matching lines @@
         dflt = UpconvertUnderlyingType(dflt)
         cur, err := gm(key)
         if err != nil {
                 return dflt
         }
         if dflt != nil && reflect.TypeOf(cur) != reflect.TypeOf(dflt) {
                 return dflt
         }
         return cur
 }