UEPLAT-7 - OBB downloading code in Java

- Code additions to download data from Google Play Store if not on device
- Changes deploy to write new meta-data
- Changes to Android deploy to cache ini files once and re-read instead of the constant open/read we had
- Added template/code generation system so we can now generate Java files based on a template for project dependent names etc

[CL 2521147 by Robert Jones in Main branch]

Engine/Build/Android/Java/JavaTemplates/AlarmReceiver.java.template

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package $$PackageName$$;
+
+import com.google.android.vending.expansion.downloader.DownloaderClientMarshaller;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager.NameNotFoundException;
+
+/**
+ * You should start your derived downloader class when this receiver gets the message 
+ * from the alarm service using the provided service helper function within the
+ * DownloaderClientMarshaller. This class must be then registered in your AndroidManifest.xml
+ * file with a section like this:
+ *         <receiver android:name=".AlarmReceiver"/>
+ */
+public class AlarmReceiver extends BroadcastReceiver {
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        try {
+            DownloaderClientMarshaller.startDownloadServiceIfRequired(context, intent, OBBDownloaderService.class);
+        } catch (NameNotFoundException e) {
+            e.printStackTrace();
+        }       
+    }
+
+}