rc4 hxtool help

["Henry B. Hotz" <hotz@jpl.nasa.gov>]

We all know that a real man page is needed for hxtool.  In the mean  
time this helps a lot.  ;-)

--- hxtool.c.orig       2007-01-26 14:10:44.000000000 -0800
+++ hxtool.c    2007-01-26 14:12:53.000000000 -0800
@@ -53,6 +53,7 @@
usage(int code)
{
      arg_printusage(args, num_args, NULL, "command");
+    help(commands, 0, NULL);
      exit(code);
}

------------------------------------------------------------------------
The opinions expressed in this message are mine,
not those of Caltech, JPL, NASA, or the US Government.
Henry.B.Hotz@jpl.nasa.gov, or hbhotz@oxy.edu