some recent patches broke tethereal: it always prints the capture file
itself (in binary). It doesn't matter whether I specify -V or -T text.
I see the same behaviour with latest svn, whenever reading from a file
or from libpcap. I also have a segmentation fault when launching
tethereal with no argument, when g_free()ing capture_opts.save_file. It
seems that save_file should have been g_strdup(""), but it is no more.
With yesterday's svn (about rev 13297) it still worked well. I don't
understand better for now, I'll try to correct that bug.