Cleaned up compiler warnings given by gcc

Change-Id: Iedd1e85109893bf28fc4ba88a28e6e4da415a41d
Added required library for plugin

Change-Id: I37010d254f2899596da3b3bdd140249566b0a851
Merge topic 'vr_plugin_fixes' into next

7c8a562f Added required library for plugin
5dc6861c Cleaned up compiler warnings given by gcc