RFR: 8282493: Add --with-jcov-modules convenience option [v3]

[Magnus Ihse Bursie]

> Allow the user to set "--with-jcov-modules=java.desktop", instead of "--with-jcov-filters=--include-modules java.desktop", since this is one of the common use cases for the filtering.

Magnus Ihse Bursie has updated the pull request incrementally with two additional commits since the last revision:

 - Update copyright year
 - Update testing documentation

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24481/files
  - new: https://git.openjdk.org/jdk/pull/24481/files/bdd55156..32e4b4a2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24481&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24481&range=01-02

  Stats: 16 lines in 3 files changed: 15 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/24481.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24481/head:pull/24481

PR: https://git.openjdk.org/jdk/pull/24481