[GHC] #10735: Smooth out the differences between `compiler/utils/Pretty.hs` and `libraries/pretty`

[GHC]

#10735: Smooth out the differences between `compiler/utils/Pretty.hs` and
`libraries/pretty`
-------------------------------------+-------------------------------------
        Reporter:  thomie            |                   Owner:  thomie
            Type:  task              |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Compiler          |                 Version:  7.0.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #1062, #1176,     |  Differential Revisions:  Phab:D1130
  #7666, #8809                       |
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Comment (by Thomas Miedema <thomasmiedema@…>):

 In [changeset:"d7b053a25f17a02753780293bc1d417c5794e91f/ghc" d7b053a/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="d7b053a25f17a02753780293bc1d417c5794e91f"
 Pretty: reformat using style from libraries/pretty (#10735)

 This commit copies the code structure (what goes where), whitespace layout
 and comments from libraries/pretty/src/Text/PrettyPrint/HughesPJ.hs,
 with the intention to be able to later more easily compare the two
 files, and port bug fixes.

 I'm sorry this messes up git blame history, but there's no other way.
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10735#comment:5>
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