[GHC] #9852: Add missing export lists

[GHC]

#9852: Add missing export lists
-------------------------------------+-------------------------------------
       Reporter:  dfeuer             |                   Owner:  dfeuer
           Type:  task               |                  Status:  new
       Priority:  low                |               Milestone:
      Component:  Core Libraries     |                 Version:  7.9
       Keywords:                     |        Operating System:
   Architecture:  Unknown/Multiple   |  Unknown/Multiple
     Difficulty:  Moderate (less     |         Type of failure:
  than a day)                        |  None/Unknown
     Blocked By:                     |               Test Case:
Related Tickets:                     |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
 Some large modules, including `GHC.Base`, lack export lists, implicitly
 exporting all top-level identifiers. This is bad for various reasons, all
 of them obvious.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9852>
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