API: Add DSTF_NONE
API: Add DSTF_NONE

sklnet/DirectFB,deniskropp/DirectFB,deniskropp/DirectFB,jcdubois/DirectFB,lancebaiyouview/DirectFB,sklnet/DirectFB,kaostao/directfb,deniskropp/DirectFB,jcdubois/DirectFB,sklnet/DirectFB,djbclark/directfb-core-DirectFB,jcdubois/DirectFB,lancebaiyouview/DirectFB,kaostao/directfb,sklnet/DirectFB,djbclark/directfb-core-DirectFB,djbclark/directfb-core-DirectFB,djbclark/directfb-core-DirectFB,deniskropp/DirectFB,kaostao/directfb,lancebaiyouview/DirectFB,lancebaiyouview/DirectFB