Point2D.java: Added protected constructor.

* java/awt/geom/Point2D.java: Added protected constructor.
	(equals): New method.
	(Float.setLocation(float,float)): New method.
	* java/awt/geom/Dimension2D.java: Added protected constructor.
	* java/awt/geom/AffineTransform.java: Made all constants public.
	(concatenate): Fixed typo in name.
	* java/awt/event/WindowAdapter.java: Class now abstract.
	* java/awt/event/KeyEvent.java (CHAR_UNDEFINED): Now final.
	* java/awt/event/FocusEvent.java: Extend ComponentEvent, not
	AWTEvent.

From-SVN: r37988

libjava/java/awt/geom/Point2D.java

@@ -26,6 +26,10 @@ public abstract class Point2D implements Cloneable
 
   public abstract void setLocation (double x, double y);
 
+  protected Point2D ()
+  {
+  }
+
   public void setLocation (Point2D pt)  { setLocation(pt.getX(), pt.getY()); }
 
   static public double distanceSq (double X1, double Y1, double X2, double Y2)
@@ -71,6 +75,14 @@ public abstract class Point2D implements Cloneable
     catch (CloneNotSupportedException _) {return null;}
   }
 
+  public boolean equals (Object o)
+  {
+    if (! (o instanceof Point2D))
+      return false;
+    Point2D p = (Point2D) o;
+    return getX () == p.getX () && getY () == p.getY ();
+  }
+
   public static class Double extends Point2D
   {
     public double x;
@@ -143,6 +155,12 @@ public abstract class Point2D implements Cloneable
       this.y = (float) y;
     }
 
+    public void setLocation (float x, float y)
+    {
+      this.x = x;
+      this.y = y;
+    }
+
     public String toString ()
     {
       return "(" + x + ", " + y + ")";