[GHC] #10573: Generalize forever to Applicative

[GHC]

#10573: Generalize forever to Applicative
-------------------------------------+-------------------------------------
              Reporter:  fumieval    |             Owner:
                  Type:  feature     |            Status:  new
  request                            |         Milestone:
              Priority:  normal      |           Version:  7.10.1
             Component:              |  Operating System:  Unknown/Multiple
  libraries/base                     |   Type of failure:  None/Unknown
              Keywords:  AMP         |        Blocked By:
          Architecture:              |   Related Tickets:
  Unknown/Multiple                   |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
 This was proposed a month ago
 (https://mail.haskell.org/pipermail/libraries/2015-May/025711.html), and
 all the responses were positive.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10573>
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