Sun, 15 Jul 2012 16:53:50 +0200 wenzelm tuned proof;
Sun, 15 Jul 2012 16:44:40 +0200 wenzelm more precise imports;
Sat, 14 Jul 2012 21:15:41 +0200 wenzelm removed some old/unused stuff;
Sat, 14 Jul 2012 21:05:29 +0200 wenzelm actually remove former atbroy102/cygwin stuff (cf. 6301046146b6, 08cb859c53cd);
Sat, 14 Jul 2012 20:59:49 +0200 wenzelm more user aliases;
Sat, 14 Jul 2012 16:35:58 +0200 nipkow removed superfluous lemmas
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