RFR: sample fixes for JDK 22 Panama API changes.

Mon Jul 24 11:17:12 UTC 2023

sample fixes for JDK 22 Panama API changes. All samples fine on MacOS. Windows scripts have to be adjusted and samples have to be tested on Windows.

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Commit messages:
 - sample fixes for JDK 22 Panama API changes.

Changes: https://git.openjdk.org/jextract/pull/125/files
 Webrev: https://webrevs.openjdk.org/?repo=jextract&pr=125&range=00
  Stats: 309 lines in 78 files changed: 51 ins; 77 del; 181 mod
  Patch: https://git.openjdk.org/jextract/pull/125.diff
  Fetch: git fetch https://git.openjdk.org/jextract.git pull/125/head:pull/125

PR: https://git.openjdk.org/jextract/pull/125