[jdk17u-dev] RFR: 8296796: Provide clean, platform-agnostic interface to C-heap trimming [v2]

[Aleksey Shipilev]

> A little unclean backport to provide the basis for subsequent backport:
>  8293114: JVM should trim the native heap
> 
> The uncleanliness comes from `#include` blocks and copyright lines updates.
> 
> Additional testing: 
>  - [x] Trim native unit tests
>  - [x] Linux AArch64 fastdebug `tier1`
>  - [x] Linux AArch64 fastdebug `tier2`
>  - [x] Linux AArch64 fastdebug `tier3`

Aleksey Shipilev 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 'master' into JDK-8296796-trim-api
 - Backport 0845b39caf6f04dca9cb7a5852f05b4b5ffbc034

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

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/1615/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/1615/files/f063ecd4..b542499b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1615&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1615&range=00-01

  Stats: 5394 lines in 406 files changed: 1854 ins; 2057 del; 1483 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1615.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1615/head:pull/1615

PR: https://git.openjdk.org/jdk17u-dev/pull/1615