RFR: JDK-8353011 : Open source Swing JButton tests - Set 1

[Harshitha Onkar]

Following tests are open sourced in this PR:

javax/swing/JButton/bug4151763.java
javax/swing/JButton/bug4415505.java
javax/swing/JButton/bug4978274.java
javax/swing/JRadioButton/bug4673850.java
javax/swing/JTable/bug4188504.java

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Commit messages:
 - Set1 tests

Changes: https://git.openjdk.org/jdk/pull/24765/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24765&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353011
  Stats: 454 lines in 5 files changed: 454 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24765.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24765/head:pull/24765

PR: https://git.openjdk.org/jdk/pull/24765