8076543: Add @modules as needed to the langtools testsReviewed-by: jjg, shurailine
8005282: Use @library tag with non-relative path for javac testsReviewed-by: jjg
6987384: -XprintProcessorRoundsInfo message printed with different timing than previousReviewed-by: darcy
6988836: A new JavacElements is created for each round of annotation processingReviewed-by: darcy