ScrollPane.java: Wrote.

* java/awt/ScrollPane.java: Wrote.
	* java/awt/peer/ScrollPanePeer.java (setBlockIncrement): New
	method.

	* java/awt/Panel.java (Panel()): Fixed.

	* java/awt/Component.java (isShowing): Return false if no peer
	exists, and true if component is visible and no parent exists.
	(getLocationOnScreen): Wrote.
	(getPreferredSize): Removed FIXME comment.
	(getMinimumSize): Likewise.
	(getAlignmentX, getAlignmentY): Wrote.
	(list): Wrote.
	(requestFocus): Wrote.
	(transferFocus): Wrote.
	(findNextFocusComponent): New method.
	(hasFocus()): Wrote.
	(checkImage): Wrote.
	(enableEvents): Call setEventMask on the peer.

	* java/awt/Container.java (list): Use super.list() to print self.
	(findNextFocusComponent): New method.
	(setLayout): Call invalidate.
	(findComponentAt): Wrote.

From-SVN: r38639

libjava/java/awt/peer/ScrollPanePeer.java

@@ -17,5 +17,6 @@ public interface ScrollPanePeer extends ContainerPeer
   int getVScrollbarWidth();
   void setScrollPosition(int x, int y);
   void setUnitIncrement(Adjustable adj, int increment);
+  void setBlockIncrement(Adjustable adj, int increment);
   void setValue(Adjustable adj, int value);
 }