Wed, 04 Aug 2010 21:56:17 +0200 blanchet improve datatype symmetry breaking;
Wed, 04 Aug 2010 10:52:29 +0200 blanchet merged
Wed, 04 Aug 2010 10:51:04 +0200 blanchet make SML/NJ happy
Wed, 04 Aug 2010 10:39:35 +0200 blanchet get rid of all "optimizations" regarding "unit" and other cardinality-1 types
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