RFR: 8329549: Remove FORMAT64_MODIFIER

Mon Jan 6 16:14:45 UTC 2025

This change removes FORMAT64_MODIFIER but adds another INT64_FORMAT_X_0_ macro to specify not having leading "0x" in the output.  Suggestions for better macro name welcome.
GHA tested.

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Commit messages:
 - Maybe this is better.
 - 8329549: Remove FORMAT64_MODIFIER

Changes: https://git.openjdk.org/jdk/pull/22918/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22918&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8329549
  Stats: 27 lines in 5 files changed: 6 ins; 14 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/22918.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22918/head:pull/22918

PR: https://git.openjdk.org/jdk/pull/22918