[commit: ghc] wip/GenericsMetaData's head updated: Merge branch 'master' into wip/GenericsMetaData (3744afb)

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Repository : ssh://git@git.haskell.org/ghc

Branch 'wip/GenericsMetaData' now includes:

     c6d4ae6 Fix test driver python3 compatibility issues
     578bc00 Add notes on change to hGetContents semantics
     995ea1c Fixed missing trailing newline bug in pretty printer
     1907e81 Updated testsuite/.gitignore to exclude some test artifacts on Windows.
     cbb20ab Drop deprecated `OverlappingInstances` from base
     919e930 Fix comment typos
     8ef4cf1 Add doctest examples for Data.Char
     bd6c6f6 Update Haddock submodule
     54addb1 Clean-up `Data.Fixed`
     f12be5b Add changelog entry for recent Unicode 7.0 update
     d3a7126 Update doctest example style in `Data.Bool`
     3744afb Merge branch 'master' into wip/GenericsMetaData