IntegerGraphicsState.java (getClip): Clone clip before returning, handle null clip.

2006-02-23  Scott Gilbertson  <scottg@mantatest.com>

	* gnu/awt/j2d/IntegerGraphicsState.java (getClip): Clone clip
	before returning, handle null clip.
	(getClipBounds): Handle null clip.
	* gnu/awt/j2d/Graphics2DImpl.java (clipRect): Handle null clip.
	* gnu/awt/xlib/XCanvasPeer.java (): 
	(getLocationOnScreen): Implement.
	* classpath/gnu/java/awt/peer/GLightweightPeer.java
	(repaint): Merged with Classpath.
	* classpath/java/awt/Graphics.java (hitClip): Merged with
	Classpath.

From-SVN: r111395