[jdk8u-dev] RFR: 8206179: com/sun/management/OperatingSystemMXBean/GetCommittedVirtualMemorySize.java fails with Committed virtual memory size illegal value

[Ben Taylor]

Backporting https://bugs.openjdk.org/browse/JDK-8206179 for parity with Oracle 8u.

Backport is clean, copyright was manually resolved.

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Commit messages:
 - 8206179: com/sun/management/OperatingSystemMXBean/GetCommittedVirtualMemorySize.java fails with Committed virtual memory size illegal value

Changes: https://git.openjdk.org/jdk8u-dev/pull/352/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=352&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8206179
  Stats: 15 lines in 1 file changed: 0 ins; 11 del; 4 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/352.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/352/head:pull/352

PR: https://git.openjdk.org/jdk8u-dev/pull/352