Converted Application to an interface and renamed the old Application to

LegacyApplication.  This is a breaking change for any class extending Application
directly.
And regardless, if you refer to Application then you will need to clean build
your app... and any of your dependencies that also refer to Application.  Basically,
anything using an AppState will need to be clean built against the next alpha.

jme3-android/src/main/java/com/jme3/app/AndroidHarness.java

@@ -50,7 +50,7 @@ public class AndroidHarness extends Activity implements TouchListener, DialogInt
     /**
      * The jme3 application object
      */
-    protected Application app = null;
+    protected LegacyApplication app = null;
 
     /**
      * Sets the desired RGB size for the surfaceview.  16 = RGB565, 24 = RGB888.
@@ -178,7 +178,7 @@ public class AndroidHarness extends Activity implements TouchListener, DialogInt
     private boolean inConfigChange = false;
 
     private class DataObject {
-        protected Application app = null;
+        protected LegacyApplication app = null;
     }
 
     @Override
@@ -241,7 +241,7 @@ public void onCreate(Bundle savedInstanceState) {
             try {
                 if (app == null) {
                     @SuppressWarnings("unchecked")
-                    Class<? extends Application> clazz = (Class<? extends Application>) Class.forName(appClass);
+                    Class<? extends LegacyApplication> clazz = (Class<? extends LegacyApplication>) Class.forName(appClass);
                     app = clazz.newInstance();
                 }
 

jme3-android/src/main/java/com/jme3/app/AndroidHarnessFragment.java

@@ -207,7 +207,7 @@ public class AndroidHarnessFragment extends Fragment implements
     protected ImageView splashImageView = null;
     final private String ESCAPE_EVENT = "TouchEscape";
     private boolean firstDrawFrame = true;
-    private Application app = null;
+    private LegacyApplication app = null;
     private int viewWidth = 0;
     private int viewHeight = 0;
 
@@ -258,7 +258,7 @@ public void onCreate(Bundle savedInstanceState) {
         try {
             if (app == null) {
                 @SuppressWarnings("unchecked")
-                Class<? extends Application> clazz = (Class<? extends Application>) Class.forName(appClass);
+                Class<? extends LegacyApplication> clazz = (Class<? extends LegacyApplication>) Class.forName(appClass);
                 app = clazz.newInstance();
             }