RFR: 8371571: Consolidate and enhance bulk memory segment ops benchmarks [v5]

[Per Minborg]

> This PR proposes to consolidate and standardize the benchmarks related to the bulk operations for memory segments. 
> 
> All the benchmarks will now run with (heap|native)x(aligned|unaligned)x(intint|intlong|longlong) combinations.
> 
> It should be noted that with this change, the running time for the benchmarks would increase significantly.

Per Minborg 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 nine additional commits since the last revision:

 - Update after comments
 - Merge branch 'master' into improved-bulk-benchmarks
 - Add loop variant for mismatch
 - Use other allocateFrom overload
 - Remove lingering comment
 - Refactor and use long arrays
 - Remove BulkOps
 - Fix copyright years
 - Improve BulkOp benchmarks

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/28260/files
  - new: https://git.openjdk.org/jdk/pull/28260/files/7f40672e..9dd24c1a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28260&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28260&range=03-04

  Stats: 37510 lines in 674 files changed: 22232 ins; 10672 del; 4606 mod
  Patch: https://git.openjdk.org/jdk/pull/28260.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28260/head:pull/28260

PR: https://git.openjdk.org/jdk/pull/28260