[jdk11u-dev] RFR: 8308910: Allow executeAndLog to accept running process

[Goetz Lindenmaier]

I backport this for parity with 11.0.21-oracle from 17.

Trivial resolves were needed.

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Commit messages:
 - Backport fc288568f2c589975463d30f8c6d0e2484f0bf14

Changes: https://git.openjdk.org/jdk11u-dev/pull/2227/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2227&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8308910
  Stats: 5 lines in 1 file changed: 4 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2227.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2227/head:pull/2227

PR: https://git.openjdk.org/jdk11u-dev/pull/2227