generate new setters in type-generator
use object instead of GcJobject in type-generator
use setters in util.cpp
use setters in classpath-common.h
use setters in compile.cpp
use setters in machine.h
temp 1 - update isFieldGcVisible
temp 2
fix finalizers test
(finish) use setters in machine.cpp
don't mark nogc fields
finish using setters