[GHC] Batch modify: #1544, #5945, #6092, #7114, #7596, #9157, #9655, ...

[GHC]

Batch modification to #1544, #5945, #6092, #7114, #7596, #9157, #9655, #10371, #10421, #10434, #5262 by thomie:
failure to Runtime performance bug

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Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=1544%2C5945%2C6092%2C7114%2C7596%2C9157%2C9655%2C10371%2C10421%2C10434%2C5262>
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