RFR: 8353444: NMT: rename 'category' to 'MemTag' in malloc tracker [v2]

[Afshin Zafari]

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

Afshin Zafari has updated the pull request incrementally with one additional commit since the last revision:

  user-facing terms remained as 'category'

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/25226/files
  - new: https://git.openjdk.org/jdk/pull/25226/files/b7666c38..05ca64d3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25226&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25226&range=00-01

  Stats: 8 lines in 3 files changed: 0 ins; 0 del; 8 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