8076543: Add @modules as needed to the langtools tests
Reviewed-by: jjg, shurailine

8062348: langtools tests should close file manager (group 1)
Reviewed-by: darcy

6725230: Java Compilation with Jsr199 ignores Class-Path in manifest
Reviewed-by: jjg, mcimadamore
Contributed-by: vicente.romero@oracle.com