Mon, 03 Nov 2014 15:08:15 +0100 wenzelm clarified legacy code;
Mon, 03 Nov 2014 14:50:27 +0100 wenzelm eliminated unused int_only flag (see also c12484a27367);
Mon, 03 Nov 2014 14:31:15 +0100 wenzelm eliminated obsolete Proof.goal_message -- print outcome more directly;
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