Qt: addons: manager: add support for single archive install

modules/gui/qt4/managers/addons_manager.cpp

@@ -50,6 +50,11 @@ void AddonsManager::findNewAddons()
     addons_manager_Gather( p_manager, NULL );
 }
 
+void AddonsManager::findDesignatedAddon( QString uri )
+{
+    addons_manager_Gather( p_manager, qtu(uri) );
+}
+
 void AddonsManager::findInstalled()
 {
     addons_manager_LoadCatalog( p_manager );

modules/gui/qt4/managers/addons_manager.hpp

@@ -79,6 +79,7 @@ signals:
 
 public slots:
     void findNewAddons();
+    void findDesignatedAddon( QString uri );
     void findInstalled();
 
 private: