[jdk11u-dev] RFR: 8233712: Limit default tests jobs based on ulimit -u setting [v4]

[George Adams]

> Applies cleanly. This backport is a prerequisite to landing https://github.com/openjdk/jdk11u-dev/pull/1277

George Adams 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 three additional commits since the last revision:

 - Merge master
 - Backport 753c58b7f556fedd7828da487a34b8b228785ff9
 - Repair backport of JDK-8211727

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

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/1308/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/1308/files/a3a64c8a..91a28d4d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1308&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1308&range=02-03

  Stats: 1051 lines in 28 files changed: 883 ins; 53 del; 115 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1308.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1308/head:pull/1308

PR: https://git.openjdk.org/jdk11u-dev/pull/1308