core: gfxcard: add pop/push identity, locking adjustments for stereo buffers
core: gfxcard: add pop/push identity, locking adjustments for stereo buffers

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