RFR: 8301856: Generated .spec file for RPM installers uninstalls desktop launcher on update

Thu Nov 23 16:47:26 UTC 2023

Fix uninstallation scripts in Linux installers to take action on desktop files only if these desktop files are not owned by another package. This prevents `xdg-mime uninstall`, `xdg-desktop-menu uninstall` commands from execution in case of upgrades.

Borrowed helper shell script function from "launchers as services" for the fix. Now on Linux there is shared code between "launchers as services" and "desktop integration" subsystems - "common_utils.sh". Added `ServiceAndDesktopTest.java` to test how they align.

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Commit messages:
 - 8301856: Generated .spec file for RPM installers uninstalls desktop launcher on update

Changes: https://git.openjdk.org/jdk/pull/16800/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16800&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301856
  Stats: 407 lines in 16 files changed: 333 ins; 30 del; 44 mod
  Patch: https://git.openjdk.org/jdk/pull/16800.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16800/head:pull/16800

PR: https://git.openjdk.org/jdk/pull/16800