[jdk11u-dev] RFR: 8250521: Configure initial RTO to use minimal retry for loopback connections on Windows

[Mat Carter]

Backport of JDK-8250521

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Commit messages:
 - Backport c2fa441d8ded94241fdac7005d6420f99b38af0b

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/626/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=626&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8250521
  Stats: 89 lines in 3 files changed: 85 ins; 2 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/626.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/626/head:pull/626

PR: https://git.openjdk.java.net/jdk11u-dev/pull/626