RFR: 8252055: Use java.util.HexFormat in java.security [v2]

[Roger Riggs]

> The java.util.HexFormat methods for formatting and parsing replace a number of adhoc hex parsing and formatting methods in sun.security implementation classes.

Roger Riggs has updated the pull request incrementally with one additional commit since the last revision:

  Update copyrights to 2020

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1828/files
  - new: https://git.openjdk.java.net/jdk/pull/1828/files/40888c41..7c125a88

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1828&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1828&range=00-01

  Stats: 7 lines in 7 files changed: 0 ins; 0 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1828.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1828/head:pull/1828

PR: https://git.openjdk.java.net/jdk/pull/1828