Fix reference counting by implementing the constructor "Interface( const Interface &other )".
Fix reference counting by implementing the
constructor "Interface( const Interface &other )".

kevleyski/DirectFB-1,deniskropp/DirectFB,mtsekm/test,kaostao/directfb,djbclark/directfb-core-DirectFB,jcdubois/DirectFB,kevleyski/directfb,kevleyski/directfb,kaostao/directfb,jcdubois/DirectFB,kevleyski/directfb,mtsekm/test,lancebaiyouview/DirectFB,jcdubois/DirectFB,sklnet/DirectFB,Distrotech/DirectFB,deniskropp/DirectFB,lancebaiyouview/DirectFB,kevleyski/directfb,kevleyski/DirectFB-1,mtsekm/test,DirectFB/directfb,Distrotech/DirectFB,dfbdok/DirectFB1,kevleyski/DirectFB-1,djbclark/directfb-core-DirectFB,lancebaiyouview/DirectFB,Distrotech/DirectFB,deniskropp/DirectFB,kevleyski/DirectFB-1,DirectFB/directfb,dfbdok/DirectFB1,dfbdok/DirectFB1,djbclark/directfb-core-DirectFB,sklnet/DirectFB,sklnet/DirectFB,kaostao/directfb,DirectFB/directfb,sklnet/DirectFB,djbclark/directfb-core-DirectFB,lancebaiyouview/DirectFB,deniskropp/DirectFB