[jdk25u] RFR: 8317801: java/net/Socket/asyncClose/Race.java fails intermittently (aix)

[Shruthi Acharya]

This pull request contains a backport of commit [8f121a17](https://github.com/openjdk/jdk/commit/8f121a173ca2534c706682f6c68fbbb0b94ec057) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
OpenJDK bug : https://bugs.openjdk.org/browse/JDK-8317801

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Commit messages:
 - Backport 8f121a173ca2534c706682f6c68fbbb0b94ec057

Changes: https://git.openjdk.org/jdk25u/pull/47/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=47&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317801
  Stats: 39 lines in 4 files changed: 32 ins; 4 del; 3 mod
  Patch: https://git.openjdk.org/jdk25u/pull/47.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/47/head:pull/47

PR: https://git.openjdk.org/jdk25u/pull/47