Review request for JDK-8142924: ES6 symbols created with Symbol.for should deserialize to canonical instances

[Attila Szegedi]

Please review JDK-8142924 "ES6 symbols created with Symbol.for should 
deserialize to canonical instances" at 
<http://cr.openjdk.java.net/~attila/8142924/webrev.jdk9> for 
<https://bugs.openjdk.java.net/browse/JDK-8142924>

Thanks,
  Attila.