Added support for ARGB4444, RGB444 and NV16 on a 16 bit RGB16 SDL window.
Added support for ARGB4444, RGB444 and NV16 on a 16 bit RGB16 SDL window.

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