RFR: 8264734: Some SA classes could use better hashCode() implementation [v3]

[Mitsuru kariya]

> The current `hashCode` implementation of SA's Address subclasses ignores the upper 32 bits of the long value.
> This PR changes to use `Long.hashCode` instead.

Mitsuru kariya has updated the pull request incrementally with one additional commit since the last revision:

  Add some more SA's classes

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3522/files
  - new: https://git.openjdk.java.net/jdk/pull/3522/files/d1e30f77..ac5c2660

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3522&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3522&range=01-02

  Stats: 5 lines in 5 files changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3522.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3522/head:pull/3522

PR: https://git.openjdk.java.net/jdk/pull/3522