Added more cancelation points to event buffer feeding thread.
Added more cancelation points to event buffer feeding thread.

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