Added sdl.h to SOURCES.
Added sdl.h to SOURCES.

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