RFR: JDK-8235474: JShell does not handle records properly

[Jan Lahoda]

Hi,

As a spin-off from:
https://mail.openjdk.java.net/pipermail/compiler-dev/2019-December/014001.html

I propose to improve the record handling in jshell. Please see the 
original post for some more details.

Webrev: http://cr.openjdk.java.net/~jlahoda/8235474/webrev.00/
CSR for review: https://bugs.openjdk.java.net/browse/JDK-8235476
JBS: https://bugs.openjdk.java.net/browse/JDK-8235474

How does this look?

Thanks,
     Jan