[jdk11u-dev] RFR: 8315726: Open source several AWT applet tests

[Andrew Lu]

I backport this for parity with 11.0.23-oracle.
test/jdk/java/awt/geom/HitTest/PathHitTest.java
fix INSTRUCTIONS """ text, others' clean.

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Commit messages:
 - fix INSTRUCTIONS text
 - fix INSTRUCTIONS text
 - Merge remote-tracking branch 'origin/master' into backport-luchenlin-1741d13b
 - Backport 1741d13b1260253d1e299e8da9c42b5519a7ae48

Changes: https://git.openjdk.org/jdk11u-dev/pull/2552/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2552&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315726
  Stats: 848 lines in 4 files changed: 848 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2552.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2552/head:pull/2552

PR: https://git.openjdk.org/jdk11u-dev/pull/2552