multiple additions and fixes for the Java APIs

Stuff needed for WhatsApp support

src/api-impl/android/appwidget/AppWidgetManager.java

@@ -1,4 +1,10 @@
 package android.appwidget;
 
+import android.content.Context;
+
 public class AppWidgetManager {
+
+    public static AppWidgetManager getInstance(Context context) {
+        return new AppWidgetManager();
+    }
 }