Java 25: workaround Security Manager removal

Vladimir Petkorequested to merge
vpa1977/junit4:java25 into master

This MR addresses #1108571.

A new patch is added to workaround security manager removal and check the exit code of the test. It uses JUnitCore.main() implementation and reflection to access package local variables. I have considered adding a public method in JUnitCore, but it would change public JUnit API.

Changes:

  • d/p/java25-compatibility.patch: use JUnitCore.main() implementation in the test runner tests.
  • d/maven.properties: remove Security Manager property.

Testing:

  • rebuild in sid chroot
  • rebuild in sid chroot with Java 25 default

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