Better stats for T5837
Better stats for T5837

I'm not sure why. It's an odd test, mind you; a weird type-function
recursion thing.  So I'm not inclined to investigate.

Anyway, good!

sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc