Tue, 14 Feb 2012 19:51:39 +0100 wenzelm tuned signature, according to actual usage of these operations;
Tue, 14 Feb 2012 19:29:54 +0100 wenzelm tuned signature;
Tue, 14 Feb 2012 19:18:57 +0100 wenzelm normalized aliases;
Tue, 14 Feb 2012 17:54:08 +0100 wenzelm elininated unused INTLEAVE;
Tue, 14 Feb 2012 17:51:29 +0100 wenzelm eliminated unused rewrite_goal_rule;
Tue, 14 Feb 2012 17:49:47 +0100 wenzelm eliminated unused subgoals_tac;
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