UPL addElement and addElements can infinitely recurse if tag is included in inserted data

Inserting element data which contains the same tag as to insert into can create an infinite loop of adding the element to itself.

1. Create project
2. Edit GearVR_UPL.xml to add this to androidManifestUpdates:

<setElement result="test" xml="&lt;manifest/&gt;"/>
<addElement tag="manifest" name="test"/>

3. Package for Android

Packaging will never stop with this bug.