[jdk11u-dev] RFR: 8267256: Extend minimal retry for loopback connections on Windows to PlainSocketImpl [v2]

[Mat Carter]

> Backport of JDK-8267256

Mat Carter has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains three new commits since the last revision:

 - Backport df332ff6e8bcee2cb5eeac1eefbc5c55a3fe8170
 - Backport 7e01bc967d00dce1791ef5cd31b8083751eb52e6
 - Backport c2fa441d8ded94241fdac7005d6420f99b38af0b

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Changes:
  - all: https://git.openjdk.java.net/jdk11u-dev/pull/607/files
  - new: https://git.openjdk.java.net/jdk11u-dev/pull/607/files/d12965aa..b1fab5be

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=607&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=607&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/607.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/607/head:pull/607

PR: https://git.openjdk.java.net/jdk11u-dev/pull/607