Make the export test available to all, since it is independent of X11
Adapt to use local .gmo files
Removed if no X11. Because X11 is needed for xvkbd but not available on some platforms (even if UNIX)
Many test are not running, but if changed the '-dbg xxx' to '-dbg any' then all of sudden they pass ... (The buffered output of lyx is often disrupted too early with 'kill -9', so the expected data are not available for the appropriate test)
