Update Android port

* doc/emacs/android.texi (Android Windowing): Reword
documentation.
* java/org/gnu/emacs/EmacsActivity.java (EmacsActivity):
* java/org/gnu/emacs/EmacsContextMenu.java (EmacsContextMenu):
* java/org/gnu/emacs/EmacsFontDriver.java (EmacsFontDriver):
* java/org/gnu/emacs/EmacsSdk7FontDriver.java
(EmacsSdk7FontDriver):
* java/org/gnu/emacs/EmacsService.java (queryBattery):
* java/org/gnu/emacs/EmacsWindow.java (EmacsWindow): Make
functions final and classes static where necessary.
* src/android.c (struct android_emacs_service): New method
`display_toast'.
(android_init_emacs_service): Load new method.
(android_display_toast): New function.
* src/android.h: Export.
* src/androidfns.c (Fandroid_detect_mouse):
* src/androidselect.c (Fandroid_clipboard_owner_p)
(Fandroid_set_clipboard, Fandroid_get_clipboard)
(Fandroid_browse_url): Prevent crashes when called from
libandroid-emacs.so.
* src/androidterm.c (handle_one_android_event): Fix out of date
commentary.

java/org/gnu/emacs/EmacsActivity.java

@@ -207,7 +207,7 @@ public class EmacsActivity extends Activity
   }
 
   @Override
-  public void
+  public final void
   onDestroy ()
   {
     EmacsWindowAttachmentManager manager;

java/org/gnu/emacs/EmacsContextMenu.java

@@ -52,7 +52,7 @@ public final class EmacsContextMenu
   /* Whether or not a submenu was selected.  */
   public static boolean wasSubmenuSelected;
 
-  private class Item implements MenuItem.OnMenuItemClickListener
+  private static class Item implements MenuItem.OnMenuItemClickListener
   {
     public int itemID;
     public String itemName, tooltip;

java/org/gnu/emacs/EmacsFontDriver.java

@@ -65,7 +65,7 @@ public abstract class EmacsFontDriver
   public static final int MONO		= 100;
   public static final int CHARCELL	= 110;
 
-  public class FontSpec
+  public static class FontSpec
   {
     /* The fields below mean the same as they do in enum
        font_property_index in font.h.  */
@@ -99,7 +99,7 @@ public abstract class EmacsFontDriver
     }
   };
 
-  public class FontMetrics
+  public static class FontMetrics
   {
     public short lbearing;
     public short rbearing;
@@ -119,7 +119,7 @@ public abstract class EmacsFontDriver
     }
   }
 
-  public class FontEntity extends FontSpec
+  public static class FontEntity extends FontSpec
   {
     /* No extra fields here.  */
   };

java/org/gnu/emacs/EmacsSdk7FontDriver.java

@@ -40,7 +40,7 @@ public class EmacsSdk7FontDriver extends EmacsFontDriver
   private static final String EM_STRING   = "m";
   private static final String TAG	  = "EmacsSdk7FontDriver";
 
-  protected class Sdk7Typeface
+  protected static final class Sdk7Typeface
   {
     /* The typeface and paint.  */
     public Typeface typeface;
@@ -164,7 +164,7 @@ public class EmacsSdk7FontDriver extends EmacsFontDriver
     }
   };
 
-  protected class Sdk7FontEntity extends FontEntity
+  protected static final class Sdk7FontEntity extends FontEntity
   {
     /* The typeface.  */
     public Sdk7Typeface typeface;
@@ -187,7 +187,7 @@ public class EmacsSdk7FontDriver extends EmacsFontDriver
     }
   };
 
-  protected class Sdk7FontObject extends FontObject
+  protected final class Sdk7FontObject extends FontObject
   {
     /* The typeface.  */
     public Sdk7Typeface typeface;

java/org/gnu/emacs/EmacsService.java

@@ -54,6 +54,8 @@ import android.content.res.AssetManager;
 import android.database.Cursor;
 import android.database.MatrixCursor;
 
+import android.hardware.input.InputManager;
+
 import android.net.Uri;
 
 import android.os.BatteryManager;
@@ -72,7 +74,7 @@ import android.provider.DocumentsContract.Document;
 import android.util.Log;
 import android.util.DisplayMetrics;
 
-import android.hardware.input.InputManager;
+import android.widget.Toast;
 
 class Holder<T>
 {
@@ -821,4 +823,24 @@ public final class EmacsService extends Service
     return new long[] { capacity, chargeCounter, currentAvg,
 			currentNow, remaining, status, };
   }
+
+  /* Display the specified STRING in a small dialog box on the main
+     thread.  */
+
+  public void
+  displayToast (final String string)
+  {
+    runOnUiThread (new Runnable () {
+	@Override
+	public void
+	run ()
+	{
+	  Toast toast;
+
+	  toast = Toast.makeText (getApplicationContext (),
+				  string, Toast.LENGTH_SHORT);
+	  toast.show ();
+	}
+      });
+  }
 };

java/org/gnu/emacs/EmacsWindow.java

@@ -64,11 +64,12 @@ public final class EmacsWindow extends EmacsHandleObject
 {
   private static final String TAG = "EmacsWindow";
 
-  private class Coordinate
+  private static class Coordinate
   {
     /* Integral coordinate.  */
     int x, y;
 
+    public
     Coordinate (int x, int y)
     {
       this.x = x;