Merge change I0e419fcf into eclair

* changes:
  Add isScreenOn() to LocalPowerManager interface so we can call it from PhoneWindowManager

core/java/android/os/LocalPowerManager.java

@@ -45,4 +45,6 @@ public interface LocalPowerManager {
 
     // the same as the method on PowerManager
     public void userActivity(long time, boolean noChangeLights, int eventType);
+
+    boolean isScreenOn();
 }