RFR: 8319213: Compatibility.java reads both stdout and stderr of JdkUtils

[Weijun Wang]

There might be more warnings from the java launcher. Better ignore them now.

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Commit messages:
 - the fix

Changes: https://git.openjdk.org/jdk/pull/16450/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16450&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319213
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/16450.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16450/head:pull/16450

PR: https://git.openjdk.org/jdk/pull/16450