RFR: 8351661: NMT: VMATree should support separate call-stacks for reserve and commit operations [v25]

[Afshin Zafari]

> In NMT detail mode, we need to have separate call-stacks for Reserve and Commit operations.
> This PR adds a second stack to every node that will be used when committing (and uncommitting) the start node of a reserved region.

Afshin Zafari has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 27 additional commits since the last revision:

 - Merge remote-tracking branch 'origin/master' into _8351661_separate_call_stack_reserve_commit
 - fixed one case.
 - test with random requests passes now.
 - semantic text added.
 - more tests for full coverage of update_region.
 - fixes for cross-compilations
 - removed print_on for release build success.
 - complete code coverage for new impl. All tests pass.
 - new version. All tests except one passed.
 - second try
 - ... and 17 more: https://git.openjdk.org/jdk/compare/365570f8...043c11d6

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24028/files
  - new: https://git.openjdk.org/jdk/pull/24028/files/a0d30ac8..043c11d6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24028&range=24
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24028&range=23-24

  Stats: 65015 lines in 1946 files changed: 44836 ins; 12014 del; 8165 mod
  Patch: https://git.openjdk.org/jdk/pull/24028.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24028/head:pull/24028

PR: https://git.openjdk.org/jdk/pull/24028