[GHC] Batch modify: #3711, #8997, #9244, #9376, #9456, #9672, #9755, ...

Batch modification to #3711, #8997, #9244, #9376, #9456, #9672, #9755, #11219, #11427, #11438 by thomie: failure to Incorrect warning at compile-time -- Tickets URL: http://ghc.haskell.org/trac/ghc/query?id=3711%2C8997%2C9244%2C9376%2C9456%2C... GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler