RFR: 8315726: Open source several AWT applet tests [v3]

[Alexander Zvegintsev]

> Some closed AWT test are open sourced.

Alexander Zvegintsev has updated the pull request incrementally with two additional commits since the last revision:

 - review comments
 - combine PathHitTest and PathHitTestManual into one test.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/15671/files
  - new: https://git.openjdk.org/jdk/pull/15671/files/25cca2ef..73487d4e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15671&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15671&range=01-02

  Stats: 518 lines in 5 files changed: 239 ins; 257 del; 22 mod
  Patch: https://git.openjdk.org/jdk/pull/15671.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15671/head:pull/15671

PR: https://git.openjdk.org/jdk/pull/15671