Rewrite chunksOfSize so it doesn't go pear shaped on long inputs
Rewrite chunksOfSize so it doesn't go pear shaped on long inputs

snowleopard/hadrian,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,bgamari/shaking-up-ghc,sdiehl/ghc,sdiehl/ghc,izgzhen/hadrian,sdiehl/ghc,snowleopard/shaking-up-ghc,sdiehl/ghc