[GHC] Batch modify: #8977, #8848, #8954, #5987, #7602, #8228, #8376, #8736, #8746, #8935, #8974, #7655, #7695, #8620, #8728, #8731, #8761, #8866, #8976, #8981, #8683

Batch modification to #8977, #8848, #8954, #5987, #7602, #8228, #8376, #8736, #8746, #8935, #8974, #7655, #7695, #8620, #8728, #8731, #8761, #8866, #8976, #8981, #8683 by thoughtpolice: milestone to 7.8.3 -- Tickets URL: http://ghc.haskell.org/trac/ghc/query?id=8977%2C8848%2C8954%2C5987%2C7602%2C... GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler