Core: In dfb_window_create() add DSCAPS_STEREO when DWCAPS_STEREO is used.
Core: In dfb_window_create() add DSCAPS_STEREO when DWCAPS_STEREO is used.

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