RFR: 8265746: Update java.time to use instanceof pattern variable (part II)

[Patrick Concannon]

Hi,

Could someone please review the second half of my update for the `java.time` package to make use of the `instanceof` pattern variable?

This PR was split into two parts due to the large number of files affected.

Kind regards,

Patrick

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Commit messages:
 - 8265746: Update java.time to use instanceof pattern variable (part II)

Changes: https://git.openjdk.java.net/jdk/pull/3650/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3650&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8265746
  Stats: 152 lines in 20 files changed: 0 ins; 48 del; 104 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3650.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3650/head:pull/3650

PR: https://git.openjdk.java.net/jdk/pull/3650