[jdk11u-dev] RFR: 8267256: Extend minimal retry for loopback connections on Windows to PlainSocketImpl [v3]

[Mat Carter]

> Backport of JDK-8267256

Mat Carter has updated the pull request incrementally with ten additional commits since the last revision:

 - Merge branch 'openjdk:master' into 8267256
 - 8198617: java/awt/Focus/6382144/EndlessLoopTest.java fails on mac
   
   Backport-of: ce48f04085817f09535647ed6fd66849916ff56e
 - 8136517: [macosx]Test  java/awt/Focus/8073453/AWTFocusTransitionTest.java fails on MacOSX
   
   Backport-of: 0438cea65b927bcf3d039b290de7fd7c60a06922
 - 8276943: Backout JDK-8274338 11u backport
   
   Reviewed-by: goetz, sgehwolf
 - 8274522: java/lang/management/ManagementFactory/MXBeanException.java test fails with Shenandoah
   
   Backport-of: c0533ef2d8e526aaec0eebe862f4bbefc159ea37
 - 8171381: [TEST_BUG] [macos] javax/swing/JPopupMenu/7156657/bug7156657.java fails on OS X
   
   Backport-of: ca6b1b49ab791d505573fa6ef000faec3b19256c
 - 8233562: [TESTBUG] Swing StyledEditorKit test bug4506788.java fails on MacOS
   
   Backport-of: 4107670d6210df16d5afd0ac7b8a7bab04a29c3b
 - 8264526: javax/swing/text/html/parser/Parser/8078268/bug8078268.java timeout
   
   Backport-of: da643cdb204ecd0c56f7ac1a744b8114171c6bd9
 - 8267246: -XX:MaxRAMPercentage=0 is unreasonable for jtreg tests on many-core machines
   
   Backport-of: 0daec497fea8c048a9455e4ff331a9d8c4293a4b

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk11u-dev/pull/607/files
  - new: https://git.openjdk.java.net/jdk11u-dev/pull/607/files/b1fab5be..59171658

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=607&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=607&range=01-02

  Stats: 173 lines in 12 files changed: 69 ins; 58 del; 46 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