Check build.xml files to ensure they fail fast when one of their targets fail

This came up in context of JavaTestUtil.java failed to compile, but we continued on to try and run tests. See: https://github.com/adoptium/aqa-tests/blob/master/jck/build.xml

We should check all build.xml files in this repo and add failonerror="true" in targets that need it, much like was done in https://github.com/adoptium/aqa-tests/pull/2179

Start with jck/build.xml and compare its target error handling with the approach used in pull request 2179. Inventory the repository's build.xml files, identify targets that should stop after a failure, and verify that a failed compilation or test target prevents later targets from running.

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