RFR: 8302659: Modernize Windows native code for NetworkInterface [v3]

[Rich DiCroce]

> Improves performance and correctness, as discussed on the net-dev mailing list.

Rich DiCroce has updated the pull request incrementally with two additional commits since the last revision:

 - Forgot to add file
 - Resolve review comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/12593/files
  - new: https://git.openjdk.org/jdk/pull/12593/files/b23d139e..da66b503

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12593&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12593&range=01-02

  Stats: 263 lines in 5 files changed: 101 ins; 108 del; 54 mod
  Patch: https://git.openjdk.org/jdk/pull/12593.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12593/head:pull/12593

PR: https://git.openjdk.org/jdk/pull/12593