ORO is in the attic now and javadocs are not available anymore for example.
*** Bug 65883 has been marked as a duplicate of this bug. ***
First part to optionally enable Java based Regex is done by merging https://github.com/apache/jmeter/pull/700 Should this be closed and the actual removal tracked in a different issue?
*** Bug 54176 has been marked as a duplicate of this bug. ***
This issue has been migrated to GitHub: https://github.com/apache/jmeter/issues/3554