[jdk11u-dev] RFR: 8286781: Replace the deprecated/obsolete gethostbyname and inet_addr calls

[fitzsim]

8286781: Replace the deprecated/obsolete gethostbyname and inet_addr calls

Reviewed-by: kbarrett, djelinski
Backport-of: d7298245d6759f62e253b5cf0df975db17fdbf82

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Commit messages:
 - 8286781: Replace the deprecated/obsolete gethostbyname and inet_addr calls

Changes: https://git.openjdk.org/jdk11u-dev/pull/2732/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2732&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8286781
  Stats: 51 lines in 8 files changed: 13 ins; 28 del; 10 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2732.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2732/head:pull/2732

PR: https://git.openjdk.org/jdk11u-dev/pull/2732