RFR: making jextract work with latest panama-foreign repo targetting jdk 20 [v3]

[Athijegannathan Sundararajan]

> making jextract work with latest panama-foreign repo targetting jdk 20

Athijegannathan Sundararajan has updated the pull request incrementally with one additional commit since the last revision:

  changes suggested in review. Missed MemoryAddress->MemorySegment change in 'tcl' sample.

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Changes:
  - all: https://git.openjdk.org/jextract/pull/60/files
  - new: https://git.openjdk.org/jextract/pull/60/files/efaaa1c9..b5eccfca

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jextract&pr=60&range=02
 - incr: https://webrevs.openjdk.org/?repo=jextract&pr=60&range=01-02

  Stats: 33 lines in 8 files changed: 0 ins; 9 del; 24 mod
  Patch: https://git.openjdk.org/jextract/pull/60.diff
  Fetch: git fetch https://git.openjdk.org/jextract pull/60/head:pull/60

PR: https://git.openjdk.org/jextract/pull/60