Implement notification residency on Android

* doc/lispref/os.texi (Desktop Notifications): Document support
for `:resident'.

* java/org/gnu/emacs/EmacsService.java (cancelNotification):

* src/android.c (android_init_emacs_service):

* src/android.h (struct android_emacs_service): New function.

* src/androidselect.c (android_notifications_notify_1)
(Fandroid_notifications_notify): New parameter QCresident; save
it within notification lists.
(android_notification_deleted, android_notification_action):
Adjust for changes to the format of notification lists and
cancel non-resident notifications when an action is selected.
(syms_of_androidselect): <QCresident>: New symbol.

java/org/gnu/emacs/EmacsService.java

@@ -1967,4 +1967,29 @@ public final class EmacsService extends Service
     else
       requestStorageAccess30 ();
   }
+
+
+
+  /* Notification miscellany.  */
+
+  /* Cancel any notification displayed with the tag TAG.  */
+
+  public void
+  cancelNotification (final String string)
+  {
+    Object tem;
+    final NotificationManager manager;
+
+    tem = getSystemService (Context.NOTIFICATION_SERVICE);
+    manager = (NotificationManager) tem;
+
+    runOnUiThread (new Runnable () {
+	@Override
+	public void
+	run ()
+	{
+	  manager.cancel (string, 2);
+	}
+      });
+  }
 };