for review: controls tests rework

[David Hill]

Kevin, Jonathan,

Refactor Javafx controls module tests for clear separation of tests

JBS: https://bugs.openjdk.java.net/browse/JDK-8134764
Webrev: http://cr.openjdk.java.net/~ddhill/8134764 <http://cr.openjdk.java.net/%7Eddhill/8134764>

This the the controls refactor that goes with the base and graphics that went before it. The goal is to separate out the JUnit tests to be on the right classloader so they will work with Jigsaw.

-- 
David Hill<David.Hill at Oracle.com>
Java Embedded Development

"A man's feet should be planted in his country, but his eyes should survey the world."
-- George Santayana (1863 - 1952)