RFR: 8324577: [REDO] - [IMPROVE] OPEN_MAX is no longer the max limit on macOS >= 10.6 for RLIMIT_NOFILE [v2]

[Gerard Ziemski]

> This is a 3rd attempt of the same fix:
> 
> 1st one had to be pulled out because of a bug in zsh
> 2nd one had a workaround for the bug in zsh, but then uncovered an issue in JWDP (JDK-8324668), which was subsequently fixed.
> 
> Tested with MACH5 tier1-9 with no unique or new failures on macOS

Gerard Ziemski has updated the pull request incrementally with one additional commit since the last revision:

  reduce number of changes for easier backports

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18821/files
  - new: https://git.openjdk.org/jdk/pull/18821/files/1376278e..6502f845

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18821&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18821&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18821.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18821/head:pull/18821

PR: https://git.openjdk.org/jdk/pull/18821