Fix miscellaneous prod bugs.

service/datastore/pls.go

Index: service/datastore/pls.go
diff --git a/service/datastore/pls.go b/service/datastore/pls.go
index 35eb42dc3c03a94be6313915ea5ed85f40b631b7..86613728527adaa902537557c0f750c4fb462033 100644
--- a/service/datastore/pls.go
+++ b/service/datastore/pls.go
@@ -24,11 +24,11 @@ import (
 //
 // GetPLS supports the following struct tag syntax:
 //   `gae:"fieldName[,noindex]"` -- an alternate fieldname for an exportable
-//	    field.  When the struct is serialized or deserialized, fieldName will be
+//      field.  When the struct is serialized or deserialized, fieldName will be
 //      associated with the struct field instead of the field's Go name. This is
 //      useful when writing Go code which interfaces with appengine code written
 //      in other languages (like python) which use lowercase as their default
-//		  datastore field names.
+//      datastore field names.
 //
 //      A fieldName of "-" means that gae will ignore the field for all
 //      serialization/deserialization.