libdirect: Define fallback for sincos when missing
libdirect: Define fallback for sincos when missing

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