[jdk18] RFR: 8279924: [PPC64, s390] implement frame::is_interpreted_frame_valid checks [v2]

[Martin Doerr]

> Implement frame::is_interpreted_frame_valid like on other platforms. Only interpreter_frame_initial_sp_offset needed to be replaced because it doesn't exist on these platforms.

Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:

  Update Copyright years.

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Changes:
  - all: https://git.openjdk.java.net/jdk18/pull/96/files
  - new: https://git.openjdk.java.net/jdk18/pull/96/files/fb53fda5..36c0cfcc

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk18&pr=96&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk18&pr=96&range=00-01

  Stats: 4 lines in 2 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk18/pull/96.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk18 pull/96/head:pull/96

PR: https://git.openjdk.java.net/jdk18/pull/96