Review request for JDK-8067931: Improve error message when with statement is passed a POJO

[Attila Szegedi]

Please review JDK-8067931 "Improve error message when with statement is passed 
a POJO" at <http://cr.openjdk.java.net/~attila/8067931/webrev.00> for 
<https://bugs.openjdk.java.net/browse/JDK-8067931>

Thanks,
  Attila.