There is a need to verify that JMH for GraalVM native images works as expected. Although tests could be created to verify that, JMH's Core IT contains a big set of tests that would be desirable to run against a different JMH backend.

This issue encompasses changes required in JMH in order to enable the ITs to be extended and run with a different Runner instance.

An example usage of the changes proposed can be seen in https://github.com/galderz/fibula/commit/36deab68212ba4f0d973e76c0b38e1c1b565d4c3 and https://github.com/galderz/fibula/commit/79f48a8eabd38af4a4a023dacd2a925d8052aeea