Moveoff demo

Moveoff_gui options:

  onpause  -- offsets when program paused
  local    -- local controls

Moveoff component installed and connected using:

  [HAL]HALFILE = LIB:hookup_moveoff.tcl

For additional info:

   man moveoff  ------ moveoff component
   man moveoff_gui --- moveoff sample gui

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Demo usage:
 1) Start linuxcnc using the 1_onpause_local config.
 2) Set halscope to ROLL mode.
 3) <F1>   (remove ESTOP)
 4) <F2>   (turn on machine)
 5) <HOME> (home all axes)
 6) <R>    (Run the program)
 7) <P>    (Pause the program)
 8) Enable offsets with the Enable Offsets checkbutton.
 9) Change the x,y,z offsets sliders and observe
    on halscope
10) Uncheck the Enable Offsets checkbutton to remove
    offsets and allow program resumption.
11) Repeat steps 6) thru 9) but alter waypoint
    backtracking with the Enable Backtrack checkbutton.
