Create tests for all new CompilerControl directives
- Compiler.add_directives -- Test that jcmd adds new file and check for correct matching and parsing. Also check that the new directives were used instead of old ones.
- Compiler.list_directives -- Check that all directives are in the list
- Compiler.clear_directives -- Test that the stack is empty
- Compiler.remove_directives -- Test that after the removing there is another directive is used for the same set of methods, or nothing for empty stack.