* src/vm/global.h (ACC_CLASS_SOFT_REFERENCE, ACC_CLASS_WEAK_REFERENCE)

* src/vm/global.h (ACC_CLASS_SOFT_REFERENCE, ACC_CLASS_WEAK_REFERENCE)
(ACC_CLASS_PHANTOM_REFERENCE): Added.

* src/vmcore/class.c (class_create_classinfo) [ENABLE_JAVASE]: Check
if the class is a reference class and flag it.

* src/vmcore/loader.c (load_class_from_classbuffer): OR the flags
loaded.

* src/vmcore/utf8.c (utf_java_lang_ref_SoftReference)
(utf_java_lang_ref_WeakReference, utf_java_lang_ref_PhantomReference):
Added.
(utf8_init): Initialize added variables.
* src/vmcore/utf8.h: Likewise.