RFR: 8332125: [nmt] Totals in diff report should print out total malloc and mmap diffs [v2]

[Sonia Zaldana Calles]

> Hi all, 
> 
> This PR addresses [8332125](https://bugs.openjdk.org/browse/JDK-8332125) enabling printing total malloc and mmap diffs when printing an NMT diff report. 
> 
> Testing: 
> - [x] Added test case passes. 
> 
> Thanks, 
> Sonia

Sonia Zaldana Calles 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 two additional commits since the last revision:

 - Merge branch 'openjdk:master' into JDK-8332125
 - 8332125: [nmt] Totals in diff report should print out total malloc and mmap diffs

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/19373/files
  - new: https://git.openjdk.org/jdk/pull/19373/files/21836173..dcb8c97c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19373&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19373&range=00-01

  Stats: 36240 lines in 1005 files changed: 22933 ins; 8083 del; 5224 mod
  Patch: https://git.openjdk.org/jdk/pull/19373.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19373/head:pull/19373

PR: https://git.openjdk.org/jdk/pull/19373