IDirectFB: Remove restriction on interface name for GetInterface().
IDirectFB: Remove restriction on interface name for GetInterface().

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