[jdk17u-dev] RFR: 8233725: ProcessTools.startProcess() has output issues when using an OutputAnalyzer at the same time

[Elif Aslan]

Clean backport to fix ProcessTools.startProcess() bug.

See original PR explanation [here](https://github.com/openjdk/jdk/pull/13594)

I need this backport to be merged to able to complete [this](https://github.com/openjdk/jdk17u-dev/pull/2339) backport request.

Additional testing: macos-x86_64-server-release tier2

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Commit messages:
 - Backport of 2e340e855b760e381793107f2a4d74095bd40199

Changes: https://git.openjdk.org/jdk17u-dev/pull/2456/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2456&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8233725
  Stats: 211 lines in 3 files changed: 199 ins; 2 del; 10 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2456.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2456/head:pull/2456

PR: https://git.openjdk.org/jdk17u-dev/pull/2456