Fix transfer of errno from master to slaves when doing ioctls.
Fix transfer of errno from master to slaves when doing ioctls.

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