RFR: 8353444: NMT: rename 'category' to 'MemTag' in malloc tracker [v5]

[Afshin Zafari]

> Renamed usage of 'category' for 'MemTag' cases.

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 six additional commits since the last revision:

 - Merge remote-tracking branch 'origin/master' into _8353444_mem_category_to_memtag
 - copyright fixed
 - Merge remote-tracking branch 'origin/master' into _8353444_mem_category_to_memtag
 - fixed a missed test.
 - user-facing terms remained as 'category'
 - 8353444: NMT: rename 'category' to 'MemTag' in malloc tracker

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/25226/files
  - new: https://git.openjdk.org/jdk/pull/25226/files/0fddfd38..79aba10b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25226&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25226&range=03-04

  Stats: 102445 lines in 2508 files changed: 59434 ins; 28080 del; 14931 mod
  Patch: https://git.openjdk.org/jdk/pull/25226.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25226/head:pull/25226

PR: https://git.openjdk.org/jdk/pull/25226