GridLayout.java (layoutContainer): Use number of rows to compute height of each cell...

* java/awt/GridLayout.java (layoutContainer): Use number of rows
	to compute height of each cell, and number of columns to compute
	width of each cell.
	* java/awt/Window.java (getOwnedWindows): Don't return null.
	* java/awt/FlowLayout.java (layoutContainer): Set width and height
	of component.  Increment x using horizontal gap, not vertical
	gap.

From-SVN: r49320

libjava/java/awt/Window.java

@@ -303,7 +303,7 @@ public class Window extends Container
   {
     // FIXME: return array containing all the windows this window currently 
     // owns.
-    return null;
+    return new Window[0];
   }
 
   /**