To help eliminate shell tests, and to support new test patterns, it would be convenient to be able to write a "driver" class for a test, such that it does not itself execute the test: instead it executes other JVMs as needed.

Such a driver class should be executed without any JVM options specified by the user on the command line.

We should support "@run driver" that is like a stripped down "@run main" and which does not inherit JVM options from the command line.