RFR (backport CSR): 8239395: Accounting currency format support

[Hohensee, Paul]

Please review the CSR https://bugs.openjdk.java.net/browse/JDK-8239395 for a 
backport of JDK-8215181 to jdk11u. It’s identical to the original CSR.

Original JBS issue: https://bugs.openjdk.java.net/browse/JDK-8215181
Original CSR: https://bugs.openjdk.java.net/browse/JDK-8218770
Backport JBS issue: https://bugs.openjdk.java.net/browse/JDK-8239394
Backport CSR: https://bugs.openjdk.java.net/browse/JDK-8239395

Thanks,
Paul