Add an original-package tag that matches the real package name.

Change-Id: Ic85000c7b4b5a5a4cc867358127f35ccd63b18d7
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 0021c14..1828a03 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -16,6 +16,9 @@
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.android.email">
+
+    <original-package android:name="com.android.email" />
+
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
     <uses-permission android:name="android.permission.READ_CONTACTS"/>
     <uses-permission android:name="android.permission.READ_OWNER_DATA"/>