Recompile material in test-images.tar.gz in Grinder

Currently Grinder consumes the pre-compiled test resource from JDK build's `test-images.tar.gz`, if a test change is made to on of the compiled libs, it would require developer to rebuild a custom JDK so Grinder would be able to pick up the change.

It would be much simpler if Grinder job can have a option to recompile the test libs without need to recompile entire JDK

Start by tracing how Grinder consumes the JDK build's test-images.tar.gz and where its job options are defined. Determine how changed test libraries could be recompiled without rebuilding the entire JDK; done means a Grinder job can opt into that behavior and consume the rebuilt test libraries.

Written by the indexing model from the issue text.