Added scrolling or panning for virtual window/layer sizes.
Added scrolling or panning for virtual window/layer sizes.

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