2003-08-21  David Daney  <ddaney@avtrex.com>

	Fix for PR libgcj/12013:
	* java/lang/ref/natReference.cc (finalize_referred_to_object):
	Check `cleared' field.
	* java/lang/ref/Reference.java (copy): Updated comments.
	(cleared): New field.
	(clear): Rewrote.

From-SVN: r70668