Added option "-ds" for dumping surfaces.
Added option "-ds" for dumping surfaces.

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