RFR: 8315742: Open source several Swing Scroll related tests [v2]

[Tejesh R]

> Open sourcing these Swing Scroll related tests:
> 
> javax/swing/JScrollBar/4495822/bug4495822.java
> javax/swing/JScrollBar/4696826/bug4696826.java
> javax/swing/JScrollBar/4842792/bug4842792.java
> javax/swing/JScrollPane/4247092/bug4247092.java
> javax/swing/JScrollPane/4264640/bug4264640.java
> javax/swing/JScrollPane/4467063/bug4467063.java

Tejesh R has updated the pull request incrementally with one additional commit since the last revision:

  Review fix

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/15839/files
  - new: https://git.openjdk.org/jdk/pull/15839/files/1d82fbe6..2bac7c70

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15839&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15839&range=00-01

  Stats: 10 lines in 6 files changed: 0 ins; 1 del; 9 mod
  Patch: https://git.openjdk.org/jdk/pull/15839.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15839/head:pull/15839

PR: https://git.openjdk.org/jdk/pull/15839