hg: amber/amber/langtools: Move unit tests for constables to JDK

[brian.goetz at oracle.com]

Changeset: 1971ca5f84d5
Author:    briangoetz
Date:      2017-04-24 10:23 -0400
URL:       http://hg.openjdk.java.net/amber/amber/langtools/rev/1971ca5f84d5

Move unit tests for constables to JDK

- test/tools/javac/specialConstantFolding/constable/ClassConstantTest.java
- test/tools/javac/specialConstantFolding/constable/TEST.properties