darcs patch: eliminate a few Eq a constraints in Stac... (and 1 more)

20 Sep 2007

      A couple of little cleanups, preparatory to moving Layout into
StackSet (which is preparatory to using the Read/Show instances
of Layout).

David

Thu Sep 20 17:01:43 EDT 2007  David Roundy 
  * eliminate a few Eq a constraints in StackSet.

Thu Sep 20 17:05:27 EDT 2007  David Roundy 
  * remove unneeded Ord constraint.

David Roundy

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