[jdk11u-dev] RFR: 8315834: Open source several Swing JSpinner related tests

[Amos Shi]

Backport of [JDK-8315834](https://bugs.openjdk.org/browse/JDK-8315834)

Testing
- Local: Test passed
  - `bug4522737.java` - Test results: passed: 1
  - `bug4656590.java` - Test results: passed: 1
  - `bug4680204.java` - Test results: passed: 1
  - `bug4862257.java` - Test results: passed: 1
  - `bug5104421.java` - Test results: passed: 1
- Pipeline: 
- Testing Machine:

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Commit messages:
 - Backport 4a63eb05221c1829b157a025a4d35cdd77a9fe04

Changes: https://git.openjdk.org/jdk11u-dev/pull/2572/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2572&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315834
  Stats: 370 lines in 5 files changed: 370 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2572.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2572/head:pull/2572

PR: https://git.openjdk.org/jdk11u-dev/pull/2572