test.class.path.prefix?

[Weijun Wang]

I have a test A.java (in test/x) that uses B.java in @library test/y, 
and the test is trying to spawn another Java process running itself 
again (with a different arg). It also happens that inside test/x there 
is a META-INF directory with services file I want to use.

So, the child Java process should be able to see both A and B and 
META-INF in its classpath.

I notice that both A and B are compiled into WORKDIR/classes/x.

So, how do I specify the -cp for the child process? I found this system 
property which is perfect:

- test.class.path.prefix: WORKDIR/classes/x and test/x

However the name is quite strange, and it's not described at the end of 
tag-spec.html. There are other system properties specified but none is 
enough, although I can combine test.classes and test.src to get what I need.

Can test.class.path.prefix be supported?

Thanks
Max