_mvrel
rl = _mvrel(cury, curx, newy, newx, FALSE);
(void) _mvrel(cury, curx, newy, newx, TRUE);
return (cost + _mvrel(cy, 0, ny, nx, FALSE));
return (_mvrel(cy, 0, ny, nx, TRUE));
_mvrel(int, int, int, int, int),