RFR: 8340885: Desugar ZipCoder.Comparison [v2]

[Claes Redestad]

> This PR desugars the enum added by JDK-8301873 to reduce classes loaded on bootstrap and stored in the default CDS archive by 2.

Claes Redestad has updated the pull request incrementally with two additional commits since the last revision:

 - Shift constant values
 - Update src/java.base/share/classes/java/util/zip/ZipCoder.java
   
   Co-authored-by: Eirik Bjorsnos <eirbjo at gmail.com>

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Changes:
  - all: https://git.openjdk.org/jdk/pull/21176/files
  - new: https://git.openjdk.org/jdk/pull/21176/files/9edd65e2..d8c06f07

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21176&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21176&range=00-01

  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/21176.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21176/head:pull/21176

PR: https://git.openjdk.org/jdk/pull/21176