- atrf-path.c (do_sweeps): return a pass/fail/undecided value
- gui.h (gui), gui.c (gui): return a pass/fail/undecided value
- gui.c (gui): return pass/fail when P or F is pressed; exit
unconditionally if Q is pressed
- atrf-path.c (main): according to the decision of "gui" or "do_sweeps",
print "#PASS", "#FAIL", or nothing
- atrf-path.c (usage, main): new option -g to invoke the GUI
- atrf-path.c (usage, main): in GUI mode, the number of sweeps is optional
(default: infinite)
- atrf-path.c (main), gui.h (gui), gui.c (gui): exit after the specified
number of sweeps
- gui.h, gui.c: plot sweep results with SDL_gfx
- Makefile: added target-specific variables for SDL and SDL_gfx
- atrf-path.c (main): invoke the GUI if the number of sweeps is zero